Optical fiber connector and assembling structure thereof

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an optical fiber connector and assembled structure thereof, more particularly, to an optical fiber connector and assembled structure thereof using body members and positioning assemblies to position bare fibers.

2. Description of Related Art

As the era is progressing, Internet technology has been developed and changed day after day. Various kinds of information transmitted and received through Internet have become an important source of intelligence. In particular, the Internet, with merits of its real-time characteristic, turns out to be one of the indispensable media for interpersonal relations and communication between politicians or between businesses.

Following a rapid growth of the amount of information, optical fiber cables have developed and played a role in connecting Internet facilities which serve as a medium of transmission. Along with popularization of Internet, optical fiber cables have been employed through official services or huge organizations such as enterprises for business purposes, and down to personal usage.

No matter whether optical fiber cables are used by enterprises or personal, optical fiber connectors are essential to bond the optical fiber cables with relevant hardware facilities. During the manufacturing of optical fiber connectors, optical fibers are broken easily upon positioning. This will decrease the yield rate and production capacity when manufacturing the optical fiber connectors.

Referring to <figref idref="DRAWINGS">FIG. 1</figref>, a schematic view illustrating the conventional positioning of an optical fiber connector, the conventional positioning structure for an optical fiber connector relates to using a sleeve <b>13</b> to position the connection of an optical fiber connector assembly <b>11</b> and an optical fiber connector assembly <b>12</b>. The optical fiber connector assembly <b>11</b> includes an optical fiber assembly <b>111</b> and a ferrule <b>112</b>. The optical fiber connector assembly <b>12</b> includes an optical fiber assembly <b>121</b> and a ferrule <b>122</b>. The optical fiber connector assembly <b>11</b> and the optical fiber connector assembly <b>12</b> are inserted into both ends of the sleeve <b>13</b>, respectively, such that the end surface of the optical fiber assembly <b>111</b> and the end surface of the optical fiber assembly <b>121</b> contact, physically, with each other, and that signals can be connected and transmitted through the optical fiber.

Nevertheless, for the optical fiber connector assemblies <b>11</b>, <b>12</b>, the ferrules <b>112</b>, <b>122</b> are drilled with holes, and then the optical fiber assemblies <b>111</b>, <b>121</b> are embedded into the holes of the ferrules <b>112</b>, <b>122</b>. As such, manufacturing of the optical fiber connector assemblies <b>11</b>, <b>12</b> not only is time consuming and labor consuming, but also is difficult for the connection of the optical fiber connector assemblies <b>11</b>, <b>12</b> to be positioned, making it inappropriate for use and production in great amount. Given the above, with a spirit of aggressive innovation, an “Optical Fiber Connector and Assembled Structure Thereof” has been conceptualized by utilizing the structural design of body members and positioning assemblies, so as to improve the production efficiency of optical fiber connectors, and eventually the present invention is accomplished after research and experiments have been undertaken.

SUMMARY OF THE INVENTION

An object of the present invention is to solve the problems as mentioned above, and to provide an optical fiber connector and assembled structure thereof so as to improve the production efficiency of optical fiber connectors.

To achieve the above-mentioned object, a first aspect of the optical fiber connector, according to the present invention, comprises a body member and a positioning member. The body member includes a first positioning hole and a concave portion. The positioning member includes a first spacing board and at least one positioning sheet. The first spacing board is provided with a second positioning hole and a protrusion. The second positioning hole corresponds to the first positioning hole, and the protrusion corresponds to, and is arranged in the concave portion. The at least one positioning sheet is provided with a third positioning hole corresponding to the second positioning hole. Components of the body member and of the positioning member can be applied with adhesive, so that the body member and the positioning member can be integrated into one piece.

According to the first aspect of the optical fiber connector, the positioning member further includes at least one second spacing board, and that the second spacing board is provided with a fourth positioning hole corresponding to the third positioning hole.

Further, according to the first aspect of the optical fiber connector, the at least one positioning sheet may be made either of plastic material, metallic material, or celluloid material.

Still further, according to the first aspect of the present invention, in case the at least one positioning sheet relates to plural ones, the positioning sheets cover at least two kinds of thicknesses.

According to the first aspect of the optical fiber connector, the concave portion is formed inside with a first thread portion, and the first spacing board formed with a second thread portion corresponding to the first thread portion.

Further, according to the first aspect of the optical fiber connector, the first spacing board includes at least one structural reinforcing portion, and that each positioning sheet is provided with at least one structural reinforcing hole corresponding to the at least one reinforcing portion.

Still further, according to the first aspect of the optical fiber connector, each positioning sheet is provided with a plurality of structural reinforcing apertures communicated with the first spacing board, and with the at least one second spacing board.

According to the first aspect of the optical fiber connector, the first spacing board is provided with at least one structural reinforcing slot, and that each positioning sheet is provided with at least one structural reinforcing aperture corresponding to the at least one structural reinforcing slot. Each second spacing board includes at least one structural reinforcing portion corresponding to the at least one structural reinforcing slot.

Further, a second aspect of the optical fiber connector comprises a body member and a positioning member. The body member includes a first positioning hole and at least one engaging slot. The positioning member includes a first spacing board and at least one positioning sheet. The first spacing board includes a second positioning hole and at least one engaging portion. The second positioning hole corresponds to the first positioning hole, and that the at least one engaging portion corresponds to the at least one engaging slot. Each positioning sheet is provided with a third positioning hole corresponding to the second positioning hole, and with at least one first engaging groove corresponding to the at least one engaging portion. Components of the body member and of the positioning member can be applied with adhesive, so that the body member and the positioning member can be integrated into one piece.

Still further, according to the second aspect of the optical fiber connector, the positioning member includes at least one second spacing board. The at least one second spacing board includes a third positioning hole and at least one second engaging groove. The third positioning hole corresponds to the first positioning hole, and that the at least one second engaging groove corresponds to the at least one first engaging groove.

According to the second aspect of the optical fiber connector, the at least one positioning sheet may be made either of plastic material, metallic material, or celluloid material.

Further, according to the second aspect of the optical fiber connector, in case the at least one positioning sheet relates to plural ones, the positioning sheets cover at least two kinds of thicknesses.

Still further, a third aspect of the optical fiber connector comprises a body member and a positioning sheet. The body member is provided with a first positioning hole and at least one structural reinforcing portion. The positioning sheet is provided with at least one structural reinforcing hole and a third positioning hole. The at least one structural reinforcing hole corresponds to the at least one structural reinforcing portion. The third positioning hole corresponds to the first positioning hole. The body member and the positioning sheet are applied with adhesive therebetween, so that the body member and the positioning sheet can be integrated into one piece.

According to the present invention, a fourth aspect of the optical fiber connector comprises a tube member and a positioning member. The tube member is provided with a first positioning hole. The positioning member includes a first spacing portion, a second spacing portion, and at least one positioning sheet. The first spacing portion is provided with a second positioning hole and at least one structural reinforcing slot. The first spacing portion corresponds to the first positioning hole. Each positioning sheet is provided with a third positioning hole and at least one structural reinforcing aperture. The third positioning hole corresponds to the second positioning hole. The at least one structural reinforcing aperture corresponds to the at least one structural reinforcing slot. The second spacing portion is provided with a fourth positioning hole and at least one structural reinforcing portion, where the fourth positioning hole corresponds to the third positioning hole, and the at least one structural reinforcing portion to the at least one structural reinforcing slot. Adhesive is applied to and in between components of the tube member and of the positioning member, such that the tube member and the positioning member can be integrated into one piece.

Further, for the fourth aspect of the optical fiber connector, the tube member is provided with at least one fastening hole. The first spacing portion is further provided with at least one fastening portion corresponding to the at least one fastening hole.

Still further, the fourth aspect of the optical fiber connector further comprises a third spacing portion and two positioning sheets. The third spacing portion is interposed between the two positioning sheets. The third spacing portion is provided with a fifth positioning hole and at least one structural protrusion and at least one structural reinforcing recess.

According to the fourth aspect of the optical fiber connector, the at least one positioning sheet may be made either of plastic material, metallic material, or celluloid material.

Further, according to the fourth aspect of the optical fiber connector, in case the at least one positioning sheet relates to plural ones, the positioning sheets cover at least two kinds of thicknesses.

Still further, a fifth aspect of the optical fiber connector comprises a tube member and a positioning member. The tube member is provided with a first positioning hole. The positioning member includes a first spacing portion, a second spacing portion, and at least one positioning sheet. The first spacing portion is provided with a second positioning hole, at least one structural reinforcing slot, and at least one fastening opening. The first spacing portion corresponds to the first positioning hole. Each positioning sheet is provided with a third positioning hole and at least one structural reinforcing aperture. The third positioning hole corresponds to the second positioning hole. The at least one structural reinforcing aperture corresponds to the at least one structural reinforcing slot. The second spacing portion is provided with a fourth positioning hole and at least one fastening portions. The fourth positioning hole corresponds to the third positioning hole, and that the at least one fastening portions to the at least one fastening opening. Adhesive will be applied to and in between the components of the tube member and of the positioning member, such that the tube member and the positioning member can be integrated into one piece.

The fifth aspect of the optical fiber connector further comprises a third spacing portion. Suppose the at least one positioning sheet relates to two positioning sheets, then the third spacing portion is interposed between the two positioning sheets. The third spacing portion is provided with a fifth positioning hole and at least one concave portion.

Further, according to the fifth aspect of the optical fiber connector, the at least one positioning sheet may be made either of plastic material, metallic material, or celluloid material.

Still further, according to the fifth aspect of the optical fiber connector, in case the at least one positioning sheet relates to plural ones, the positioning sheets cover at least two kinds of thicknesses.

According to the present invention, a sixth aspect of the optical fiber connector comprises a tube member and a positioning member. The tube member is provided with a first positioning hole and at least one fastening hole. The positioning member includes a first spacing portion, a second spacing portion, and at least one positioning sheet. The first spacing portion is provided with a second positioning hole and at least one structural reinforcing slot. The first spacing portion corresponds to the first positioning hole. Each positioning sheet is provided with a third positioning hole and at least one structural reinforcing aperture. The third positioning hole corresponds to the second positioning hole. The at least one structural reinforcing aperture corresponds to the at least one structural reinforcing slot. The second spacing portion is provided with a fourth positioning hole and at least one fastening portion, where the fourth positioning hole corresponds to the third positioning hole, and that the at least one fastening portion corresponds to the at least one fastening hole. Adhesive will be applied to and in between the components of the tube member and of the positioning member, such that the tube member and the positioning member can be integrated into one piece.

Further, the sixth aspect of the optical fiber connector further comprises a third spacing portion. Suppose the at least one positioning sheet relates to two positioning sheets, then the third spacing portion is interposed between the two positioning sheets. The third spacing portion is provided with a fifth positioning hole and at least one concave portion.

Still further, according to the sixth aspect of the optical fiber connector, the at least one positioning sheet may be made either of plastic material, metallic material, or celluloid material.

According to the sixth aspect of the optical fiber connector, in case the at least one positioning sheet relates to plural ones, the positioning sheets cover at least two kinds of thicknesses.

According to the present invention, in the first aspect to the sixth aspect of the optical fiber connectors, the third positioning holes each has a cross-section relatively ladder-like, with a longer top side and a shorter bottom side, and opened downward, and that an opening is formed at the bottom thereof, such that bare fibers can be inserted into, and positioned in, the third positioning holes.

Further, the first aspect to the sixth aspect of the optical fiber connectors each further comprises an optical fiber assembly including a bare fiber and a protective layer. The bare fiber is enveloped by the protective layer however with at least an end of the bare fiber uncovered. The protective layer is provided with a first positioning hole, and that the bare fiber is inserted into the third positioning hole so as to obtain a positioning effect.

Still further, in the first aspect of the optical fiber connector, a plastic portion is formed by applying glue in and between the bare fiber and the positioning sheet so as to secure the bare fiber.

According to the present invention, in the second to the six aspect of the optical fiber connectors, plastic portions are formed by applying glue in and between the bare fibers and the positioning sheets so as to secure the bare fibers.

Further, according to the present invention, an assembled structure of optical fiber connectors comprises, in a first aspect, a plurality of optical fiber connectors, a casing member, an upper board, a positioning assembly, and a plastic member. The upper board is arranged above the casing member, and includes at least one sprue and at least one optical-fiber-assembly through hole. The positioning assembly is provided at inner side of the casing member, and is provided with at least one optical-fiber-connector positioning hole corresponding to the at least one optical-fiber-assembly through hole. The plastic member is integrated with the casing member, the upper board, the positioning assembly, and with at least one optical fiber connector, where the at least one optical fiber connector corresponds to, and passes through, the at least one optical-fiber-assembly through hole.

In the first aspect of the assembled structure of optical fiber connectors, the casing member further includes a mounting portion for arranging a protective member.

Further, in the first aspect of the assembled structure of optical fiber connectors, the positioning assembly includes at least one sheet and at least one spacing board. The at least one sheet is provided with at least one optical-fiber-connector positioning hole, whereas the at least one spacing board is provided with at least one positioning hole corresponding to the at least one optical-fiber-assembly through hole.

Still further, in the first aspect of the assembled structure of optical fiber connectors, the positioning assembly may be formed with at least one plastic-material channel; and that a plastic member, located at the upper side and lower side of the positioning assembly, can be fed through the at least one plastic-material channel, and formed integrally as an optical-fiber-connector assembled structure.

In the first aspect of the assembled structure of optical fiber connectors, at least one positioning sheet of each optical fiber connector and the at least one sheet may be made either of plastic material, metallic material, or celluloid material.

Further, in the first aspect of the assembled structure of optical fiber connectors, in case the at least one positioning sheet relates to plural ones, the positioning sheets cover at least two kinds of thicknesses.

Still further, a second aspect of the assembled structure of optical fiber connectors comprises a plurality of optical fiber connectors, a first body member, a second body member, and a positioning assembly. The first body member includes at least one first mounting portion. The second body member is arranged on the first body member, and includes at least one second mounting portion corresponding to the at least one first mounting portions. The positioning assembly includes either at least one sheet or at least one spacing board. The at least one sheet is provided with a plurality of optical-fiber-connector positioning holes corresponding to the plural optical fiber connectors, respectively. The at least one spacing board is provided with a plurality of positioning holes corresponding respectively to the plural optical fiber connectors. Adhesive is applied to the plural optical fiber connectors, the first body member, the second body member, and the positioning assembly, so as to make the same integrated into one piece. The plural optical fiber connectors correspond to, and are arranged in, the at least one first mounting portion and the at least one second mounting portion; and besides, ends of the plural optical fiber connectors emerge from the positioning holes of the at least one spacing board, respectively.

The second aspect of the assembled structure of optical fiber connectors further comprises two tube-like members. The first body member further includes two receiving portions for receiving the two tube-like members. The first body member and the second body member are formed with two recessed portions. The positioning assembly further includes two protrusions corresponding respectively to the two recessed portions. The at least one spacing board further includes two second positioning pin holes corresponding respectively to the two tube-like members. The two tube-like members are provided on the positioning assembly. Each tube-like member includes a third positioning pin hole for receiving a positioning pin. Adhesive is applied to the plural optical fiber connectors, the first body member, the second body member, the positioning assembly, and the two tube-like members, so as to make the same integrated into one piece.

Further, the second aspect of the assembled structure of optical fiber connectors further comprises two tube-like members. The first body member further includes two receiving portions for respectively receiving the two tube-like members, and two first fastening portions. Further, the second body member further includes two second fastening portions corresponding respectively to the two first fastening portions, and two first engaging portions. The positioning assembly further includes two second engaging portions corresponding respectively to the two first engaging portions. The at least one spacing board further includes two second positioning pin holes corresponding respectively to the two tube-like members. The two tube-like members are provided on the positioning assembly. Each tube-like member includes a third positioning pin hole for receiving the positioning pin. Adhesive is applied to the plural optical fiber connectors, the first body member, the second body member, the positioning assembly, and the two tube-like members, so as to make the same integrated into one piece.

Further, in the second aspect of the assembled structure of optical fiber connectors, the at least one sheet is formed with an opening communicated therethrough, and a plurality of positioning slots, where the positioning slots take place of the plural optical-fiber-connector positioning holes of the at least one sheet, respectively.

Still further, the second aspect of the assembled structure of optical fiber connectors further comprises a protective member for receiving therein the first body member, the second body member, and the positioning assembly.

According to the present invention, a seventh aspect of the optical fiber connector comprises an upper board, a positioning assembly, two tube-like members, a plastic member, and at least one optical fiber assembly. The upper board includes at least one sprue, at least one optical-fiber-assembly through hole, and two mounting holes. The positioning assembly includes at least one positioning sheet, where the at least one positioning sheet is provided with at least one bare-fiber positioning hole corresponding to the at least one optical-fiber-assembly hole, and with two first positioning pin holes corresponding respectively to the two mounting holes. The tube-like members are provided respectively on the two mounting holes, and that the tube-like members are each provided with a third positioning pin hole for receiving a positioning pin. The plastic member is integrated with the upper board, the positioning assembly, and the two tube-like members, and that the at least one optical fiber assembly is integrated with the plastic member. The at least one optical fiber assembly includes at least one bare fiber and a protective layer, and that the at least one bare fiber corresponds to, and emerges from the at least one bare-fiber positioning hole.

Further, according to the seventh aspect of the optical fiber connector, the positioning assembly further comprises at least one spacing board. The at least one spacing board includes at least one positioning hole corresponding to the at least one bare-fiber positioning hole, and with two second positioning pin holes corresponding respectively to the two tube-like members.

Still further, according to the present invention, the seventh aspect of the optical fiber connector further comprises a casing member, where the casing member is formed with an accommodating space for receiving the plastic member, the upper board, and the two tube-like member; and where the casing member has a length and a width, which are greater than a length and a width of the positioning assembly.

In the seventh aspect of the optical fiber connector, the at least one positioning sheet may be made either of plastic material, metallic material, or celluloid material.

Further, according to the seventh aspect of the present invention, in case the at least one positioning sheet relates to plural ones, the positioning sheets cover at least two kinds of thicknesses.

Still further, an eighth aspect of the optical fiber connector comprises a first body member, a second body member, a positioning assembly, two tube-like members, and at least one optical fiber assembly. The first body member includes at least one first mounting portion and two receiving portions. The second body member is arranged on the first body member, and includes at least one second mounting portion corresponding to the at least one first mounting portion. The positioning assembly includes either at least one positioning sheet or at least one spacing board. The at least one positioning sheet is provided with at least one bare-fiber positioning hole corresponding to the at least one first mounting portion and to the at least one second mounting portion, and with two first positioning pin holes. The at least one spacing board is provided with at least one positioning hole corresponding to the at least one bare-fiber positioning hole, and with two second positioning pin holes. The two tube-like members correspond to, and are received in the two receiving portions. The two tube-like members are each provided with a third positioning pin hole for receiving a positioning pin, such that each third positioning pin hole corresponds to each first positioning pin hole and to each second positioning pin hole, respectively. The at least one optical fiber assembly corresponds to, and is arranged in, the at least one first mounting portion and in the at least one second mounting portion. The at least one optical fiber assembly includes at least one bare fiber and a protective layer. The at least one bare fiber emerges from the at least one bare-fiber positioning hole. Adhesive is applied to the first body member, the second body member, the two tube-like members, and the positioning assembly, so as to make the same integrated into one piece.

According to the eighth aspect of the optical fiber connector, the first body member and the second body member are formed with two recessed portions. The positioning assembly further includes two protrusions corresponding respectively to the two recessed portions. The two tube-like members are arranged on the positioning assembly.

Further, according to the eighth aspect of the optical fiber connector, the first body member further includes two first fastening portions. The second body member further includes two second fastening portions corresponding respectively to the two first fastening portions, and two first engaging portions. The positioning assembly further includes two second engaging portions corresponding respectively to the two first engaging portions.

Still further, according to the eighth aspect of the optical fiber connector, the at least one positioning sheet is provided with an opening communicated therethrough, and at least one positioning slot. The at least one positioning slot takes the place of the at least one bare-fiber positioning hole of the at least one positioning sheet.

According to the present invention, the eighth aspect of the optical fiber connector further comprises a protective member for accommodating the first body member, the second body member, and the positioning assembly.

Further, according to the present invention, the eighth aspect of the optical fiber connector, the at least one positioning sheet may be made either of plastic material, metallic material, or celluloid material.

Still further, according to the eighth aspect of the present invention, in case the at least one positioning sheet relates to plural ones, the positioning sheets cover at least two kinds of thicknesses.

According to the eighth aspect of the optical fiber connector, the at least one bare-fiber positioning hole has a cross-section relatively ladder-like, with a longer top side and a shorter bottom side, and that an opening is formed at the bottom thereof, such that bare fibers can be inserted into, and positioned in, the at least one bare-fiber positioning hole.

Further, according to the present invention the eighth aspect of the optical fiber connector further comprises at least one optical fiber assembly, where the at least one optical fiber connector corresponds to, and is arranged in, the at least one first mounting portion and in the at least one second mounting portion. The at least one optical fiber assembly includes at least one bare fiber and a protective layer, such that at least one bare fiber is enveloped by the protective layer; and besides, at least one end of the at least one bare fiber emerges from the protective layer. The at least one bare fiber passes through, and is arranged in, the at least one bare-fiber positioning hole so as to obtain a positioning effect.

Still further, according to the eighth aspect of the optical fiber connector, a plastic portion is formed by applying glue in and between the at least one bare fiber and the positioning assembly so as to secure the bare fiber.

The abovementioned brief description and the following detailed description are for the purpose of exemplification, and for a further explanation of the claims, and that it is understood that other objects, advantages, and novel features of the present invention will become more apparent from the following description when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

<figref idref="DRAWINGS">FIG. 1</figref> is a schematic view illustrating the conventional positioning of an optical fiber connector;

<figref idref="DRAWINGS">FIG. 2A</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a first embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 2B</figref> is a schematic view illustrating a positioning sheet of the optical fiber connector according to the first embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 2C</figref> is a cross-sectional view illustrating the optical fiber connector according to the first embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 3A</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a second embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 3B</figref> is a cross-sectional view illustrating the optical fiber connector according to the second embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 4</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a third embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 5</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a fourth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 6</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a fifth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 7</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a sixth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 8A</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a seventh embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 8B</figref> is a schematic view illustrating a first spacing board and a positioning sheet of the optical fiber connector according to the seventh embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 9A</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to an eighth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 9B</figref> is a schematic view illustrating a first spacing board and a positioning sheet of the optical fiber connector according to the eighth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 9C</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a ninth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 10</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a tenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 11A</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to an eleventh embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 11B</figref> is a schematic view illustrating a first spacing portion and a second spacing portion of the optical fiber connector according to the eleventh embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 11C</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a twelfth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 11D</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a thirteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 11E</figref> is a schematic view illustrating a first spacing portion and a second spacing portion of the optical fiber connector according to the thirteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 11F</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a fourteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 12A</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a fifteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 12B</figref> is a schematic view illustrating a first spacing portion and a second spacing portion of the optical fiber connector according to the fifteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 12C</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a sixteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 12D</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a seventeenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 12E</figref> is a schematic view illustrating a first spacing portion and a second spacing portion of the optical fiber connector according to the seventeenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 12F</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to an eighteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 13A</figref> is a cross-sectional view illustrating a first embodiment in manufacturing an assembled structure of optical fiber connectors according to the present invention;

<figref idref="DRAWINGS">FIG. 13B</figref> is a cross-sectional view illustrating the assembled structure of optical fiber connectors shown in <figref idref="DRAWINGS">FIG. 13A</figref>;

<figref idref="DRAWINGS">FIG. 13C</figref> is a cross-sectional view taken from cutting line A-A of <figref idref="DRAWINGS">FIG. 13A</figref>;

<figref idref="DRAWINGS">FIG. 13D</figref> is a perspective view illustrating the assembled structure of optical fiber connectors shown in <figref idref="DRAWINGS">FIG. 13B</figref>;

<figref idref="DRAWINGS">FIG. 14A</figref> is a schematic view illustrating manufacturing of an optical fiber connector according to a nineteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 14B</figref> is a schematic view illustrating a positioning assembly of the optical fiber connector according to the nineteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 14C</figref> is a schematic view illustrating layout of a casing member and the positioning assembly of the optical fiber connector according to the nineteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 14D</figref> is a cross-sectional view illustrating the optical fiber connector according to the nineteenth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 15</figref> is a schematic view illustrating manufacturing of an optical fiber connector according to a twentieth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 16</figref> is a schematic view illustrating manufacturing of an optical fiber connector according to a twenty-first embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 17</figref> is a schematic view illustrating manufacturing of an optical fiber connector according to a twenty-second embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 18A</figref> is a perspective exploded view illustrating a second embodiment in manufacturing an assembled structure of optical fiber connectors according to the present invention;

<figref idref="DRAWINGS">FIG. 18B</figref> is an exploded cross-sectional view illustrating the second embodiment in manufacturing the assembled structure of optical fiber connectors according to the present invention;

<figref idref="DRAWINGS">FIG. 18C</figref> is a perspective view illustrating the assembled structure of optical fiber connectors shown in <figref idref="DRAWINGS">FIG. 18A</figref>;

<figref idref="DRAWINGS">FIG. 18D</figref> is a schematic view illustrating a positioning assembly of the assembled structure of optical fiber connectors as shown in <figref idref="DRAWINGS">FIG. 18C</figref>;

<figref idref="DRAWINGS">FIG. 19A</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a twenty-third embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 19B</figref> is another exploded view illustrating manufacturing of the optical fiber connector according to the twenty-third embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 19C</figref> is an exploded view illustrating manufacturing of the optical fiber connector according to the twenty-third embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 19D</figref> is a schematic view illustrating a positioning assembly of the optical fiber connector according to the twenty-third embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 19E</figref> is a schematic view illustrating another positioning assembly of the optical fiber connector according to the twenty-third embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 19F</figref> is a schematic view illustrating still another positioning assembly of the optical fiber connector according to the twenty-third embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 20</figref> is an exploded view illustrating manufacturing of an optical fiber connector according to a twenty-fourth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 21A</figref> is a perspective exploded view illustrating a third embodiment in manufacturing an assembled structure of optical fiber connectors according to the present invention;

<figref idref="DRAWINGS">FIG. 21B</figref> is a schematic view illustrating a positioning assembly of the third embodiment of the assembled structure of optical fiber connectors according to the present invention;

<figref idref="DRAWINGS">FIG. 22A</figref> is a perspective exploded view illustrating manufacturing of an optical fiber connector according to a twenty-fifth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 22B</figref> is a schematic view illustrating a positioning assembly of the optical fiber connector according to the twenty-fifth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 22C</figref> is a schematic view illustrating another positioning assembly of the optical fiber connector according to the twenty-fifth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 22D</figref> is a schematic view illustrating still another positioning assembly of the optical fiber connector according to the twenty-fifth embodiment of the present invention;

<figref idref="DRAWINGS">FIG. 23A</figref> is a perspective exploded view illustrating a fourth embodiment in manufacturing an assembled structure of optical fiber connectors according to the present invention; and

<figref idref="DRAWINGS">FIG. 23B</figref> is a schematic view illustrating a positioning assembly of the fourth embodiment of the assembled structure of optical fiber connectors according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

References are made to <figref idref="DRAWINGS">FIG. 2A</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a first embodiment of the present invention; <figref idref="DRAWINGS">FIG. 2B</figref>, a schematic view illustrating a positioning sheet of the optical fiber connector; and <figref idref="DRAWINGS">FIG. 2C</figref>, a cross-sectional view illustrating the optical fiber connector. The manufacturing of the optical fiber connector <b>2</b>, in the first embodiment, comprises an optical fiber assembly <b>20</b>, a body member <b>21</b>, a positioning member <b>22</b>, and a lower mold plate <b>23</b>. By using the lower mold plate <b>23</b> and adhesive (not shown), the optical fiber assembly <b>20</b>, the body member <b>21</b>, and the positioning member <b>22</b> can be integrated into one piece, so as to form the optical fiber connector <b>2</b>.

The optical fiber assembly <b>20</b> includes a bare fiber <b>201</b> and a protective layer <b>202</b>, where the bare fiber <b>201</b> is enveloped by the protective layer <b>202</b> however with at least an end of the bare fiber <b>201</b> uncovered. The body member <b>21</b> includes a first positioning hole <b>211</b> and a concave portion <b>212</b>. The positioning member <b>22</b> includes a first spacing board <b>221</b>, a positioning sheet <b>222</b>, and a second spacing board <b>223</b>. The first spacing board <b>221</b> is provided with a second positioning hole <b>2211</b> and a protrusion <b>2212</b>. The second positioning hole <b>2211</b> corresponds to the first positioning hole <b>211</b>, and the protrusion <b>2212</b> corresponds to, and is arranged in the concave portion <b>212</b>. The positioning sheet <b>222</b> is provided with a third positioning hole <b>2221</b> corresponding to the second positioning hole <b>2211</b>, and three structural reinforcing holes <b>2222</b> communicated with the first spacing board <b>221</b> and the second spacing board <b>223</b>. The second spacing board <b>223</b> is provided with a fourth positioning hole <b>2231</b> corresponding to the third positioning hole <b>2221</b>. The positioning sheet <b>222</b> is stacked on the second spacing board <b>223</b>. The lower mold plate <b>23</b> is provided with a through hole <b>231</b> corresponding to the fourth positioning hole <b>2231</b>, and with an accommodating space S<b>1</b> for arranging therein the body member <b>21</b> and the positioning member <b>22</b>.

Further, as shown in <figref idref="DRAWINGS">FIG. 2A</figref>, the protective layer <b>202</b> of the optical fiber assembly <b>20</b> passes through, and is arranged in, the first positioning hole <b>211</b>; whereas the bare fiber <b>201</b> of the optical fiber assembly <b>20</b> passes through, and is arranged in, the third positioning hole <b>2221</b> for achieving the purpose of positioning. Adhesive will be applied to and in between the components of the body member <b>21</b> and of the positioning member <b>22</b>; and then the optical fiber assembly <b>20</b>, the body member <b>21</b>, and the positioning member <b>22</b> be laid into the accommodating space S<b>1</b> of the lower mold plate <b>23</b>, and be pressed, such that the optical fiber assembly <b>20</b>, the body member <b>21</b>, and the positioning member <b>22</b> can be integrated into one piece. Thereafter, the lower mold plate <b>23</b> is removed, and the fourth positioning hole <b>2231</b> is applied with glue so as to form a plastic portion <b>240</b> and to secure the bare fiber <b>201</b>, where the bare fiber <b>201</b> will be processed with abrasion.

Still further, as shown in <figref idref="DRAWINGS">FIGS. 2A and 2B</figref>, the third positioning hole <b>2221</b> is formed crater-like and opened downward, such that cross-section of the third positioning hole <b>2221</b> is relatively ladder-like, with a longer top side and a shorter bottom side, and that an opening is formed at the bottom thereof. With this configuration, the bare fiber <b>201</b> can be inserted into the third positioning hole <b>2221</b> easily during the process of manufacturing. Moreover, the bare fiber <b>201</b> can be positioned precisely in an accurate position where the optical fiber connector <b>2</b> is connected and aligned with other optical fiber connector, making signals between the two optical fiber connectors be transmitted more efficiently. The structural reinforcing holes <b>2222</b> of the positioning sheet <b>222</b> can make the first spacing board <b>221</b> and the second spacing board <b>223</b> be securely glued together.

The body member <b>21</b> may be made either of plastic material, metallic material, or ceramic material; whereas the positioning sheet <b>222</b> made either of plastic material, metallic material, or celluloid material, which facilitate arranging the third positioning hole <b>2221</b> at an accurate position, and which facilitate abrasion of the optical fiber connectors. Further, suppose the second spacing board <b>223</b> is absent, the third positioning hole <b>2221</b> is to correspond to the through hole <b>231</b> of the lower mold plate <b>23</b>.

Now references are made to <figref idref="DRAWINGS">FIG. 3A</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a second embodiment of the present invention; and <figref idref="DRAWINGS">FIG. 3B</figref>, a cross-sectional view illustrating the optical fiber connector. The manufacturing of the optical fiber connector <b>2</b>A, in the second embodiment, comprises an optical fiber assembly <b>20</b>, a body member <b>21</b>, a positioning member <b>22</b>A, and a lower mold plate <b>23</b>. By using the lower mold plate <b>23</b> and adhesive (not shown), the optical fiber assembly <b>20</b>, the body member <b>21</b>, and the positioning member <b>22</b>A can be integrated into one piece, so as to form the optical fiber connector <b>2</b>A.

According to the present invention, the optical fiber connector <b>2</b> of the first embodiment differs from the optical fiber connector <b>2</b>A of the second embodiment in that there are different numbers for the positioning sheets and for the second spacing boards. The positioning member <b>22</b>A includes a first spacing board <b>221</b>, two positioning sheets <b>222</b><i>a</i>, <b>222</b><i>b</i>, and two second spacing boards <b>223</b>. The first spacing board <b>221</b> is provided with a second positioning hole <b>2211</b> and a protrusion <b>2212</b>. The second positioning hole <b>2211</b> corresponds to a first positioning hole <b>211</b>, and the protrusion <b>2212</b> corresponds to, and is arranged in, a concave portion <b>212</b>. The positioning sheet <b>222</b><i>a </i>is provided with a bare-fiber positioning hole <b>222</b><i>a</i><b>1</b> corresponding to the second positioning hole <b>2211</b>, whereas the positioning sheet <b>222</b><i>b </i>is provided with a bare-fiber positioning hole <b>222</b><i>b</i><b>1</b> corresponding to the second positioning hole <b>2211</b>. The second spacing board <b>223</b><i>a </i>is provided with a second positioning hole <b>223</b><i>a</i><b>1</b> corresponding to the bare-fiber positioning hole <b>222</b><i>a</i><b>1</b>; whereas the second spacing board <b>223</b><i>b </i>is provided with a second positioning hole <b>223</b><i>b</i><b>1</b> corresponding to the bare-fiber positioning hole <b>222</b>B<b>1</b>. The positioning sheets <b>222</b><i>a</i>, <b>223</b><i>b </i>and the second spacing boards <b>223</b><i>a</i>, <b>223</b><i>b </i>are interlaced with each other. The lower mold plate <b>23</b> is provided with a through hole <b>231</b> corresponding to the second positioning hole <b>223</b><i>b</i><b>1</b>, and with an accommodating space S<b>1</b> for arranging therein the body member <b>21</b> and the positioning member <b>22</b>A.

Namely, in the second embodiment, the two positioning sheets <b>222</b><i>a</i>, <b>222</b><i>b </i>are used to enhance the positioning effect of the bare fiber <b>201</b>. The shape of the positioning sheets <b>222</b><i>a</i>, <b>222</b><i>b </i>may be formed, as shown in <figref idref="DRAWINGS">FIG. 2B</figref>, by either laser cutting method, wet etching method, dry etching method, or precision punching method. In view of the fact that these methods relate to quite mature technology, a thickness of preferably 0.05 mm for the positioning sheet <b>222</b><i>b</i>, and a diameter of preferably 0.127 mm for the bare-fiber positioning holes <b>222</b><i>a</i><b>1</b>, <b>222</b><i>b</i><b>1</b>, can be obtained easily. Besides, the positioning sheets <b>222</b><i>a</i>, <b>222</b><i>b </i>each has a different thickness, respectively, such that the positioning sheet <b>222</b><i>a </i>has a thickness of 0.5 mm which is greater than that of the positioning sheet <b>222</b><i>b</i>, thereby the optical fiber connector <b>2</b>A can increase its wear resistance and durability.

Further referring to <figref idref="DRAWINGS">FIG. 4</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a third embodiment of the present invention, the manufacturing of the optical fiber connector, in the third embodiment, comprises two optical fiber assemblies <b>20</b>, two body members <b>21</b>, two positioning members <b>22</b>, and a lower mold plate <b>23</b>. By using the lower mold plate <b>23</b> and adhesive (not shown), the optical fiber assembly <b>20</b>, the body member <b>21</b>, and the positioning member <b>22</b> can be integrated into one piece, so as to form the optical fiber connector <b>2</b> as shown in <figref idref="DRAWINGS">FIG. 2C</figref>.

Still further, according to the present invention, the manufacturing of the optical fiber connector of the third embodiment differs from the manufacturing of the optical fiber connector of the first embodiment in that a lower mold plate <b>23</b>A is provided with two through holes <b>231</b><i>a </i>and two accommodating spaces S<b>1</b> for arranging therein the body members <b>21</b> and the positioning members <b>22</b>. Namely, in the third embodiment, two optical fiber connectors can be made in one process, so as to increase the production capacity of optical fiber connectors. As such, it is obvious to know that making plural optical fiber connectors at one process with plural lower mold plates is possible.

Now referring to <figref idref="DRAWINGS">FIG. 5</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a fourth embodiment of the present invention, the manufacturing of an optical fiber connector, in the fourth embodiment, comprises an optical fiber assembly <b>20</b>, a body member <b>21</b>, a positioning member <b>22</b>C, and a lower mold plate <b>23</b>.

In the fourth embodiment, the positioning member <b>22</b>C includes a first spacing board <b>221</b><i>c </i>and a positioning sheet <b>222</b><i>c</i>. The first spacing board <b>221</b><i>c </i>includes a second positioning hole <b>221</b><i>c</i><b>1</b>, a protrusion <b>221</b><i>c</i><b>2</b>, and three structural reinforcing portions <b>221</b><i>c</i><b>3</b>. The three structural reinforcing portions <b>221</b><i>c</i><b>3</b>, which are formed equidistantly, surround the second positioning hole <b>221</b><i>c</i><b>1</b> (since <figref idref="DRAWINGS">FIG. 5</figref> is a cross-sectional view, only one structural reinforcing position <b>221</b><i>c</i><b>3</b> is shown). The second positioning hole <b>221</b><i>c</i><b>1</b> corresponds to a first positioning hole <b>221</b>, and the protrusion <b>221</b><i>c</i><b>2</b> corresponds to, and is arranged, in a concave portion <b>212</b>. The positioning sheet <b>222</b><i>c </i>includes a third positioning hole <b>222</b><i>c</i><b>1</b> and three positioning apertures <b>222</b><i>c</i><b>2</b> corresponding to the three structural reinforcing portions <b>221</b><i>c</i><b>3</b>, respectively. Through the help of the three structural reinforcing portions <b>221</b><i>c</i><b>3</b> and the three positioning apertures <b>222</b><i>c</i><b>2</b>, the structure of the first spacing board <b>221</b><i>c </i>and of the positioning sheet <b>222</b><i>c </i>can be strengthened, and after gluing and pressing, an optical fiber connector can be formed.

Further referring to <figref idref="DRAWINGS">FIG. 6</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a fifth embodiment of the present invention, the manufacturing of an optical fiber connector, in the fifth embodiment, comprises an optical fiber assembly <b>20</b>, a body member <b>21</b>, a positioning member <b>22</b>D, and a lower mold plate <b>23</b>.

In the fifth embodiment, the positioning member <b>22</b>D includes a first spacing board <b>221</b><i>d</i>, a positioning sheet <b>222</b><i>d</i>, and a second spacing board <b>223</b><i>d</i>. The first spacing board <b>221</b><i>d </i>is provided with a second positioning hole <b>221</b><i>d</i><b>1</b>, a protrusion <b>221</b><i>d</i><b>2</b>, and three structural reinforcing slots <b>221</b><i>d</i><b>3</b>. The three structural reinforcing slots <b>221</b><i>d</i><b>3</b>, which are formed equidistantly, surround the second positioning hole <b>221</b><i>d</i><b>1</b> (since <figref idref="DRAWINGS">FIG. 6</figref> is a cross-sectional view, only one structural reinforcing slot <b>221</b><i>d</i><b>3</b> is shown). The second positioning hole <b>221</b><i>d</i><b>1</b> corresponds to a first positioning hole <b>221</b>, and the protrusion <b>221</b><i>d</i><b>2</b> corresponds to, and is arranged, in a concave portion <b>212</b>. The positioning sheet <b>222</b><i>d </i>is provided with a third positioning hole <b>222</b><i>d</i><b>1</b> and three structural reinforcing apertures <b>222</b><i>d</i><b>2</b> corresponding to the three structural reinforcing slots <b>221</b><i>d</i><b>3</b>, respectively. The second spacing board <b>223</b><i>d </i>includes a fourth positioning hole <b>223</b><i>d</i><b>1</b> and three structural reinforcing portions <b>223</b><i>d</i><b>2</b>. Through the help of the three structural reinforcing slots <b>221</b><i>d</i><b>3</b>, the three structural reinforcing apertures <b>222</b><i>d</i><b>2</b>, and the three structural reinforcing portions <b>223</b><i>d</i><b>2</b>, the structure of the first spacing board <b>221</b><i>d</i>, of the positioning sheet <b>222</b>, and of the second spacing board <b>223</b><i>d</i>, can be positioned accurately, and after gluing and pressing, an optical fiber connector can be formed.

Still further referring to <figref idref="DRAWINGS">FIG. 7</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a sixth embodiment of the present invention, the manufacturing of an optical fiber connector, in the sixth embodiment, comprises an optical fiber assembly <b>20</b>, a body member <b>21</b>E, a positioning member <b>22</b>E, and a lower mold plate <b>23</b>.

In the sixth embodiment, the body member <b>21</b>E is provided with a concave portion <b>212</b> which is formed inside a thread portion <b>213</b>. The positioning member <b>22</b>E includes a first spacing board <b>221</b><i>e</i>, a positioning sheet <b>222</b>, and a second spacing board <b>223</b>. The first spacing board <b>221</b><i>e </i>includes a second positioning hole <b>221</b><i>e</i><b>1</b>, a protrusion <b>221</b><i>e</i><b>2</b>, and a second thread portion <b>221</b><i>e</i><b>3</b> corresponding to the first thread portion <b>213</b>. Through the help of the first thread portion <b>213</b> and the second thread portion <b>221</b><i>e</i><b>3</b>, the first spacing board <b>221</b><i>e </i>can be fastened to the body member <b>21</b>E, and after gluing and pressing, an optical fiber connector can be formed.

Now references are made to <figref idref="DRAWINGS">FIG. 8A</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a seventh embodiment of the present invention; and <figref idref="DRAWINGS">FIG. 8B</figref>, a schematic view illustrating a first spacing board and a positioning sheet of the optical fiber connector. The manufacturing of the optical fiber connector, in the seventh embodiment, comprises an optical fiber assembly <b>20</b>, a body member <b>24</b>, a positioning member <b>25</b>, and a lower mold plate <b>23</b>B.

In the seventh embodiment, the body member <b>24</b> includes a first positioning hole <b>241</b> and three engaging slots <b>242</b>. The positioning member <b>25</b> includes a first spacing board <b>251</b> and a positioning sheet <b>252</b>. The first spacing board <b>251</b> includes a second positioning hole <b>2511</b> and three engaging portions <b>2512</b>. The second positioning hole <b>2511</b> corresponds to the first positioning hole <b>241</b>, and that the three engaging portions <b>2512</b> correspond to the three engaging slots <b>242</b>, respectively. The positioning sheet <b>252</b> is provided with a third positioning hole <b>2512</b>, which corresponds to the second positioning hole <b>2511</b>, and three first engaging grooves <b>2522</b> which correspond to the three engaging portions <b>2512</b>, respectively. The lower mold plate <b>23</b>B is provided with a through hole <b>231</b><i>b </i>corresponding to the second positioning hole <b>2511</b>, and with an accommodating space S<b>2</b> for arranging therein the body member <b>24</b> and the positioning member <b>25</b>. Components of the body member <b>24</b> and of the positioning member <b>25</b> can be applied with adhesive, so that the body member <b>24</b>, the positioning member <b>25</b>, and the optical fiber assembly <b>20</b> can be integrated into one piece. Then an end of the bare fiber <b>201</b> of the optical fiber assembly <b>20</b> protrudes from the positioning member <b>25</b>, and after gluing and pressing, an optical fiber connector can be formed.

References are made to <figref idref="DRAWINGS">FIG. 9A</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to an eighth embodiment of the present invention; and <figref idref="DRAWINGS">FIG. 9B</figref>, a schematic view illustrating a first spacing board and a positioning sheet of the optical fiber connector. The manufacturing of the optical fiber connector, in the eighth embodiment, comprises an optical fiber assembly <b>20</b>, a body member <b>24</b>, a positioning member <b>25</b>A, and a lower mold plate <b>23</b>B.

In the eighth embodiment, the positioning member <b>25</b>A includes a first spacing board <b>251</b>, a positioning sheet <b>252</b>, and a second spacing board <b>253</b>. The second spacing board <b>253</b> includes a third positioning hole <b>2531</b> and three second engaging grooves <b>2532</b>. The third positioning hole <b>2531</b> corresponds to the first positioning hole <b>241</b>, and that the three second engaging grooves <b>2532</b> correspond to three first engaging grooves <b>2522</b>, respectively, and after gluing and pressing, an optical fiber connector can be formed.

Further referring to <figref idref="DRAWINGS">FIG. 9C</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a ninth embodiment of the present invention, the manufacturing of the optical fiber connector, in the ninth embodiment, comprises an optical fiber assembly <b>20</b>, a body member <b>24</b>, a positioning member <b>25</b>B, and a lower mold plate <b>23</b>B. The positioning member <b>25</b>B includes a first spacing board <b>251</b>, two positioning sheets <b>252</b>, and two second spacing boards <b>253</b>. By way of the arrangement of the two positioning sheets <b>252</b>, an enhancing positioning effect for the bare fiber <b>201</b> can be obtained.

Referring to <figref idref="DRAWINGS">FIG. 10</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a tenth embodiment of the present invention, the manufacturing of the optical fiber connector, in the tenth embodiment, comprises an optical fiber assembly <b>20</b>, a body member <b>26</b>, a positioning sheet <b>27</b>, and a lower mold plate <b>23</b>B.

In the tenth embodiment, the body member <b>26</b> is provided with a first positioning hole <b>261</b> and three structural reinforcing portions <b>262</b>. The three structural reinforcing portions <b>262</b>, which are formed equidistantly, surround the first positioning hole <b>261</b> (since <figref idref="DRAWINGS">FIG. 10</figref> is a cross-sectional view, only two structural reinforcing portions <b>262</b> are shown). The positioning sheet <b>27</b> is provided with a third positioning hole <b>271</b> and three structural reinforcing holes <b>272</b>, where the three structural reinforcing holes <b>272</b> correspond to the three structural reinforcing portions <b>262</b>, respectively. The third positioning hole <b>271</b> corresponds to the first positioning hole <b>261</b>. The body member <b>26</b> and the positioning sheet <b>27</b> are applied with adhesive therebetween, so that the body member <b>26</b> and the positioning member <b>27</b> can be integrated with the optical fiber assembly <b>20</b> and into one piece. Then an end of the bare fiber <b>201</b> of the optical fiber assembly <b>20</b> protrudes from the positioning sheet <b>27</b>, and after gluing and pressing, an optical fiber connector can be formed.

Now references are made to <figref idref="DRAWINGS">FIG. 11A</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to an eleventh embodiment of the present invention; and <figref idref="DRAWINGS">FIG. 11B</figref>, a schematic view illustrating a first spacing portion and a second spacing portion of the optical fiber connector. The manufacturing of the optical fiber connector, in the eleventh embodiment, comprises an optical fiber assembly <b>20</b>, a tube member <b>28</b>, a positioning member <b>29</b>A, and a lower mold plate <b>23</b>C.

In the eleventh embodiment, the tube member <b>28</b> is provided with a first positioning hole <b>281</b>. The positioning member <b>29</b>A includes a first spacing portion <b>291</b><i>a</i>, a second spacing portion <b>293</b><i>a</i>, and a positioning sheet <b>292</b><i>a</i>. The first spacing portion <b>221</b><i>a </i>is provided with a second positioning hole <b>291</b><i>a </i>and three structural reinforcing slots <b>291</b><i>a</i><b>3</b>. The first spacing portion <b>291</b><i>a </i>corresponds to, and is arranged in, the first positioning hole <b>281</b>. The positioning sheet <b>292</b><i>a </i>is provided with a third positioning hole <b>292</b><i>a</i><b>1</b> and three structural reinforcing apertures <b>292</b><i>a</i><b>2</b>. The third positioning hole <b>292</b><i>a</i><b>1</b> corresponds to the second positioning hole <b>291</b><i>a</i>. The three structural reinforcing apertures <b>292</b><i>a</i><b>2</b> correspond to the three structural reinforcing slots <b>291</b><i>a</i><b>3</b>, respectively. The second spacing portion <b>293</b><i>a </i>is provided with a fourth positioning hole <b>293</b><i>a</i><b>1</b> and three structural reinforcing portions <b>293</b><i>a</i><b>2</b>, where the fourth positioning hole <b>293</b><i>a</i><b>1</b> corresponds to the third positioning hole <b>292</b><i>a</i><b>1</b>, and the three structural reinforcing portions <b>293</b><i>a</i><b>2</b> to the three structural reinforcing slots <b>291</b><i>a</i><b>3</b>. The lower mold plate <b>23</b>C is provided with a through hole <b>231</b><i>c </i>corresponding to the fourth positioning hole <b>293</b><i>a</i><b>1</b>, and with an accommodating space S<b>3</b> for arranging therein the tube member <b>28</b> and the positioning member <b>29</b>A. Adhesive will be applied to and in between components of the tube member <b>28</b> and of the positioning member <b>29</b>A, such that the tube member <b>28</b> and the positioning member <b>29</b>A can be integrated with the optical fiber assembly <b>20</b> and into one piece. Then an end of the bare fiber <b>201</b> of the optical fiber assembly <b>20</b> protrudes from the positioning member <b>29</b>A, and after gluing and pressing, an optical fiber connector can be formed.

Further referring to <figref idref="DRAWINGS">FIG. 11C</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a twelfth embodiment of the present invention, the manufacturing of the optical fiber connector, in the twelfth embodiment, comprises an optical fiber assembly <b>20</b>, a tube member <b>28</b>, a positioning member <b>29</b>B, and a lower mold plate <b>23</b>C.

According to the present invention, the manufacturing of the optical fiber connector of the twelfth embodiment differs from that of the eleventh embodiment in that in the twelfth embodiment, the positioning sheet <b>29</b>B includes a first spacing portion <b>291</b><i>a</i>, a second spacing portion <b>293</b><i>a</i>, two positioning sheets <b>292</b><i>a</i>, and a third spacing portion <b>294</b><i>a</i>. The third spacing portion <b>294</b><i>a </i>is interposed between the two positioning sheets <b>292</b><i>a</i>. The third spacing portion <b>294</b><i>a </i>is provided with a fifth positioning hole <b>294</b><i>a</i><b>1</b>, three structural reinforcing protrusions <b>294</b><i>a</i><b>2</b>, and three structural reinforcing recesses <b>294</b><i>a</i><b>3</b>. The three structural reinforcing protrusions <b>294</b><i>a</i><b>2</b> correspond to three structural reinforcing slots <b>291</b><i>a</i><b>3</b>, respectively, and that the three structural reinforcing recesses <b>294</b><i>a</i><b>3</b> to three structural reinforcing portions <b>293</b><i>a</i><b>2</b>. The two positioning sheets <b>292</b><i>a</i><b>2</b> enhance a positioning effect for the bare fiber <b>201</b>.

Now references are made to <figref idref="DRAWINGS">FIG. 11D</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a thirteenth embodiment of the present invention; and <figref idref="DRAWINGS">FIG. 11E</figref>, a schematic view illustrating a first spacing portion and a second spacing portion of the optical fiber connector. The manufacturing of the optical fiber connector, in the thirteenth embodiment, comprises an optical fiber assembly <b>20</b>, a tube member <b>28</b>A, a positioning member <b>29</b>C, and a lower mold plate <b>23</b>C.

In the thirteenth embodiment, the tube member <b>28</b>A is provided with a first positioning hole <b>281</b> and three fastening holes <b>282</b>. The positioning member <b>29</b>C includes a first spacing portion <b>291</b><i>b</i>, a second spacing portion <b>293</b><i>a</i>, and a positioning sheet <b>292</b><i>a</i>. The first spacing portion <b>291</b><i>b </i>is provided with a second positioning hole <b>291</b><i>b</i><b>1</b>, three fastening portions <b>291</b><i>b</i><b>2</b>, and three structural reinforcing slots <b>291</b><i>b</i><b>3</b>. The first spacing portion <b>291</b><i>b </i>corresponds to, and is arranged in, the first positioning hole <b>281</b>. The three fastening portions <b>291</b><i>b</i><b>2</b> correspond to the three fastening holes <b>282</b>, respectively. The positioning sheet <b>292</b><i>a </i>is provided with a third positioning hole <b>292</b><i>a</i><b>1</b> and three structural reinforcing apertures <b>292</b><i>a</i><b>2</b>. The third positioning hole <b>292</b><i>a</i><b>1</b> corresponds to the second positioning hole <b>291</b><i>b</i><b>1</b>. The three structural reinforcing apertures <b>292</b><i>a</i><b>2</b> correspond to the three structural reinforcing slots <b>291</b><i>b</i><b>3</b>, respectively. The second spacing portion <b>293</b><i>a </i>is provided with a fourth positioning hole <b>293</b><i>a</i><b>1</b> and three structural reinforcing portions <b>293</b><i>a</i><b>2</b>, where the fourth positioning hole <b>293</b><i>a</i><b>1</b> corresponds to the third positioning hole <b>292</b><i>a</i><b>1</b>, and the three structural reinforcing portions <b>293</b><i>a</i><b>2</b> to the three structural reinforcing slots <b>291</b><i>b</i><b>3</b>. The lower mold plate <b>23</b>C is provided with a through hole <b>231</b><i>c </i>corresponding to the fourth positioning hole <b>293</b><i>a</i><b>1</b>, and with an accommodating space S<b>3</b> for arranging therein the tube member <b>28</b>A and the positioning member <b>29</b>C. Adhesive will be applied to and in between the components of the tube member <b>28</b>A and of the positioning member <b>29</b>C, such that the tube member <b>28</b>A and the positioning member <b>29</b>C can be integrated with the optical fiber assembly <b>20</b> and into one piece. Then an end of the bare fiber <b>201</b> of the optical fiber assembly <b>20</b> protrudes from the positioning member <b>29</b>C, and after gluing and pressing, an optical fiber connector can be formed. Moreover, the fastening hole <b>282</b> has a height H<b>11</b>, which plus height H<b>12</b>, height H<b>13</b>, and height H<b>14</b> equals to a total height H<b>1</b>, such that height H<b>1</b> is smaller than a height H<b>2</b> which is the height of the accommodating space S<b>3</b> of the lower mold plate <b>23</b>C, making the lower mold plate <b>23</b>C able to envelop the fastening holes <b>282</b>.

Referring to <figref idref="DRAWINGS">FIG. 11F</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a fourteenth embodiment of the present invention, the manufacturing of the optical fiber connector, in the fourteenth embodiment, comprises an optical fiber assembly <b>20</b>, a tube member <b>28</b>A, a positioning member <b>29</b>D, and a lower mold plate <b>23</b>C.

According to the present invention, the manufacturing of the optical fiber connector of the fourteenth embodiment differs from the manufacturing of the optical fiber connector of the thirteenth embodiment in that in the fourteenth, the positioning member <b>29</b>D includes a first spacing portion <b>291</b><i>b</i>, a second spacing portion <b>293</b><i>a</i>, two positioning sheets <b>292</b><i>a</i>, and a third spacing portion <b>294</b><i>a</i>. The third spacing portion <b>294</b><i>a </i>is interposed between the two positioning sheets <b>292</b><i>a</i>. The two positioning sheets <b>292</b><i>a</i><b>2</b> enhance a positioning effect for the bare fiber <b>201</b>. Further, the fastening hole <b>282</b> has a height H<b>31</b>, which plus height H<b>32</b> equals to a total height H<b>3</b>, such that height H<b>3</b> is smaller than a height H<b>4</b> which is the height of the accommodating space S<b>3</b> of the lower mold plate <b>23</b>C, making the lower mold plate <b>23</b>C able to envelop the fastening holes <b>282</b>.

Further, references are made to <figref idref="DRAWINGS">FIG. 12A</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a fifteenth embodiment of the present invention; and <figref idref="DRAWINGS">FIG. 12B</figref>, a schematic view illustrating a first spacing portion and a second spacing portion of the optical fiber connector. The manufacturing of the optical fiber connector, in the fifteenth embodiment, comprises an optical fiber assembly <b>20</b>, a tube member <b>28</b>B, a positioning member <b>29</b>E, and a lower mold plate <b>23</b>C.

In the fifteenth embodiment, the tube member <b>28</b>B is provided with a first positioning hole <b>281</b>. The positioning member <b>29</b>E includes a first spacing portion <b>291</b><i>c</i>, a second spacing portion <b>293</b><i>b</i>, and a positioning sheet <b>292</b><i>b</i>. The first spacing portion <b>291</b><i>c </i>is provided with a second positioning hole <b>291</b><i>c</i><b>1</b>, three structural reinforcing slots <b>291</b><i>c</i><b>2</b>, and three fastening openings <b>291</b><i>c</i><b>3</b>. The first spacing portion <b>291</b><i>c </i>corresponds to, and is arranged in, the first positioning hole <b>281</b>. The positioning sheet <b>292</b><i>b </i>is provided with a third positioning hole <b>292</b><i>b</i><b>1</b> and three structural reinforcing apertures <b>292</b><i>b</i><b>2</b>. The third positioning hole <b>292</b><i>b</i><b>1</b> corresponds to the second positioning hole <b>291</b><i>c</i><b>1</b>. The three structural reinforcing apertures <b>292</b><i>b</i><b>2</b> each corresponds to at least one structural reinforcing slot <b>291</b><i>c</i><b>2</b>. The second spacing portion <b>293</b><i>b </i>is provided with a fourth positioning hole <b>293</b><i>b</i><b>1</b> and three fastening portions <b>293</b><i>b</i><b>2</b>. The fourth positioning hole <b>293</b><i>b</i><b>1</b> corresponds to the third positioning hole <b>292</b><i>b</i><b>1</b>, and the three fastening portions <b>293</b><i>b</i><b>2</b> to the three fastening openings <b>291</b><i>c</i><b>3</b>, respectively. Adhesive will be applied to and in between the components of the tube member <b>28</b>B and of the positioning member <b>29</b>E, such that the tube member <b>28</b>B and the positioning member <b>29</b>E can be integrated with the optical fiber assembly <b>20</b> and into one piece. Then an end of the bare fiber <b>201</b> of the optical fiber assembly <b>20</b> protrudes from the positioning member <b>29</b>E, and after gluing and pressing, an optical fiber connector can be formed.

Now referring to <figref idref="DRAWINGS">FIG. 12C</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a sixteenth embodiment of the present invention, the manufacturing of the optical fiber connector, in the sixteenth embodiment, comprises an optical fiber assembly <b>20</b>, a tube member <b>28</b>B, a positioning member <b>29</b>F, and a lower mold plate <b>23</b>C.

According to the present invention, the manufacturing of the optical fiber connector of the sixteenth embodiment differs from the manufacturing of the optical fiber connector of the fifteenth embodiment in that in the sixteenth, the positioning member <b>29</b>F includes a first spacing portion <b>291</b><i>c</i>, a second spacing portion <b>293</b><i>b</i>, two positioning sheets <b>292</b><i>b</i>, and a third spacing portion <b>294</b><i>b</i>. The third spacing portion <b>294</b><i>b </i>is interposed between the two positioning sheets <b>292</b><i>b</i>. The third spacing portion <b>294</b><i>b </i>is provided with a fifth positioning hole <b>294</b><i>b</i><b>1</b> and three concave portions <b>294</b><i>b</i><b>2</b>, where the fifth positioning hole <b>294</b><i>b</i><b>1</b> corresponds to a second positioning hole <b>291</b><i>c</i><b>1</b>, and the three concave portions <b>294</b><i>b</i><b>2</b> to three structural reinforcing slots <b>291</b><i>c</i><b>2</b>. The two positioning sheets <b>292</b><i>b</i><b>2</b> enhance a positioning effect for the bare fiber <b>201</b>.

Further, references are made to <figref idref="DRAWINGS">FIG. 12D</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a seventeenth embodiment of the present invention; and <figref idref="DRAWINGS">FIG. 12E</figref>, a schematic view illustrating a first spacing portion and a second spacing portion of the optical fiber connector. The manufacturing of the optical fiber connector, in the seventeenth embodiment, comprises an optical fiber assembly <b>20</b>, a tube member <b>28</b>C, a positioning member <b>29</b>G and a lower mold plate <b>23</b>C.

In the seventeenth embodiment, the tube member <b>28</b>C is provided with a first positioning hole <b>281</b> and three fastening holes <b>282</b>. The positioning member <b>29</b>G includes a first spacing portion <b>291</b><i>d</i>, a second spacing portion <b>293</b><i>c</i>, and a positioning sheet <b>292</b><i>b</i>. The first spacing portion <b>291</b><i>d </i>is provided with a second positioning hole <b>291</b><i>d</i><b>1</b> and three structural reinforcing slots <b>291</b><i>d</i><b>2</b>. The first spacing portion <b>291</b><i>d </i>corresponds to, and is arranged in, the first positioning hole <b>281</b>. The positioning sheet <b>292</b><i>b </i>is provided with a third positioning hole <b>292</b><i>b</i><b>1</b> and three structural reinforcing apertures <b>292</b><i>b</i><b>2</b>. The third positioning hole <b>292</b><i>b</i><b>1</b> corresponds to the second positioning hole <b>291</b><i>d</i><b>1</b>. The three structural reinforcing apertures <b>292</b><i>b</i><b>2</b> each corresponds to at least one structural reinforcing slot <b>291</b><i>d</i><b>2</b>. The second spacing portion <b>293</b><i>c </i>is provided with a fourth positioning hole <b>293</b><i>c</i><b>1</b> and three fastening portions <b>293</b><i>c</i><b>2</b>. The fourth positioning hole <b>293</b><i>c</i><b>1</b> corresponds to the third positioning hole <b>292</b><i>b</i><b>1</b>, and the three fastening portions <b>293</b><i>c</i><b>2</b> to the three fastening holes <b>282</b>, respectively. Adhesive will be applied to and in between the components of the tube member <b>28</b>C and of the positioning member <b>29</b> such that the tube member <b>28</b>C and the positioning member <b>29</b>G can be integrated with the optical fiber assembly <b>20</b> and into one piece. Then an end of the bare fiber <b>201</b> of the optical fiber assembly <b>20</b> protrudes from the positioning member <b>29</b>G, and after gluing and pressing, an optical fiber connector can be formed. Moreover, the fastening hole <b>282</b> has a height H<b>51</b>, which plus height H<b>52</b>, height H<b>53</b>, and height H<b>54</b> equals to a total height H<b>5</b>, such that height H<b>5</b> is smaller than a height H<b>6</b> which is the height of the accommodating space S<b>3</b> of the lower mold plate <b>23</b>C, making the lower mold plate <b>23</b>C able to envelop the fastening holes <b>282</b>.

Referring to <figref idref="DRAWINGS">FIG. 12F</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to an eighteenth embodiment of the present invention, the manufacturing of the optical fiber connector, in the eighteenth embodiment, comprises an optical fiber assembly <b>20</b>, a tube member <b>28</b>C, a positioning member <b>29</b>H, and a lower mold plate <b>23</b>C.

According to the present invention, the manufacturing of the optical fiber connector of the eighteenth embodiment differs from the manufacturing of the optical fiber connector of the seventeenth embodiment in that in the eighteenth, the positioning member <b>29</b>H includes a first spacing portion <b>291</b><i>d</i>, a second spacing portion <b>293</b><i>c</i>, two positioning sheets <b>292</b><i>b</i>, and a third spacing portion <b>294</b><i>b</i>. The third spacing portion <b>294</b><i>b </i>is interposed between the two positioning sheets <b>292</b><i>b</i>. The two positioning sheets <b>292</b><i>b</i><b>2</b> enhance a positioning effect for the bare fiber <b>201</b>. Further, the fastening hole <b>282</b> has a height H<b>71</b>, which plus height H<b>72</b> equals to a total height H<b>7</b>, such that height H<b>7</b> is smaller than a height H<b>8</b> which is the height of the accommodating space S<b>3</b> of the lower mold plate <b>23</b>C, making the lower mold plate <b>23</b>C able to envelop the fastening holes <b>282</b>.

Now references are made to <figref idref="DRAWINGS">FIG. 13A</figref>, a cross-sectional view illustrating a first embodiment in manufacturing an assembled structure of optical fiber connectors according to the present invention; <figref idref="DRAWINGS">FIG. 13B</figref>, a cross-sectional view illustrating the assembled structure of optical fiber connectors shown in <figref idref="DRAWINGS">FIG. 13A</figref>; <figref idref="DRAWINGS">FIG. 13C</figref>, a cross-sectional view taken from cutting line A-A of <figref idref="DRAWINGS">FIG. 13A</figref>; and <figref idref="DRAWINGS">FIG. 13D</figref>, a perspective view illustrating the assembled structure of optical fiber connectors shown in <figref idref="DRAWINGS">FIG. 13B</figref>; and also made to <figref idref="DRAWINGS">FIG. 2C</figref>. The manufacturing of the first embodiment of the assembled structure of optical fiber connectors comprises four optical fiber connectors <b>2</b>, a lower mold plate <b>31</b>, a mold wall <b>32</b>, a casing member <b>33</b>, an upper board <b>34</b>, and a positioning assembly <b>35</b>.

According to the present invention, explanation is necessary for the manufacturing of the first embodiment of the assembled structure of optical fiber connectors that four optical fiber connectors <b>2</b> are employed (see <figref idref="DRAWINGS">FIG. 2C</figref>). Of course, the optical fiber connector <b>2</b>A can be employed as well (see <figref idref="DRAWINGS">FIG. 3B</figref>). The optical fiber connectors formed in the manufacturing of the optical fiber connectors, according to the first embodiment to the eighteenth embodiment, can be adapted for the manufacturing of the first embodiment of the assembled structure of optical fiber connectors. In other words, the manufacturing of the first embodiment of the assembled structure of optical fiber connectors lies in integrating the optical fiber connectors <b>2</b>, <b>2</b>A into one piece.

In the first embodiment in manufacturing the assembled structure of optical fiber connectors, the lower mold plate <b>31</b> is provided with four first holes <b>310</b>, four second holes <b>311</b>, and a protrusion <b>312</b>. The first holes <b>310</b> are communicated with the second holes <b>311</b>. The first hole <b>310</b> corresponds to the positioning member <b>22</b> of the optical fiber connector <b>2</b>; and that the second hole <b>311</b> has a diameter slightly smaller than that of the first hole <b>310</b>, and does not contact with the bare fiber <b>201</b>; such that the second holes <b>311</b> are provided for maintaining the same height for the ends of the optical fiber connectors <b>2</b> so as to facilitate abrasion thereof. The lower mold plate <b>31</b> is provided with a bottom wall <b>3101</b> at where the first hole <b>310</b> is communicated with the second hole <b>311</b>. The mold wall <b>32</b> is provided above the lower mold plate <b>31</b> and is located inside of the protrusion <b>312</b>. The casing member <b>33</b> is arranged above the lower mold plate <b>31</b> and neighbors to inner side of the mold wall <b>32</b>, and includes a mounting portion <b>331</b> for arranging a protective member <b>37</b>. The upper board <b>34</b> is arranged above the casing member <b>33</b>, and includes two sprues <b>341</b> and four optical-fiber-assembly through holes <b>342</b>. The positioning assembly <b>35</b> is provided in between the lower mold plate <b>31</b> and the upper board <b>34</b>, and includes a sheet <b>351</b> and a spacing board <b>352</b> overlapped with each other (in case of more than two sheets or spacing plates, the sheet(s) and spacing plate(s) will be interplaced with one another, however not shown). The sheet <b>351</b> is provided with four optical-fiber-connector positioning holes <b>3511</b> corresponding to the four second holes <b>311</b> and to the four optical-fiber-assembly through holes <b>342</b>, respectively. The spacing board <b>352</b> is provided with four positioning holes <b>3521</b> corresponding to the four optical-fiber-connector positioning holes <b>3511</b>. The positioning members <b>22</b> and the bare fibers <b>201</b> of the four optical fiber connectors <b>2</b> (see <figref idref="DRAWINGS">FIG. 2C</figref>) correspond to, and pass through, the four first holes <b>310</b> and the four second holes <b>311</b>.

As shown in <figref idref="DRAWINGS">FIG. 13A</figref> and <figref idref="DRAWINGS">FIG. 13B</figref>, the four optical fiber connectors <b>2</b> pass through the four optical-fiber-assembly through holes <b>342</b> of the upper board <b>34</b>, the four optical-fiber-connector positioning holes <b>3511</b> and the four positioning holes <b>3521</b> of the positioning assemblies <b>35</b>, respectively, such that the positioning members <b>22</b> can touch the bottom walls <b>3101</b> of the four first holes <b>310</b> of the lower mold plate <b>31</b>, respectively, and that the four bare fibers <b>201</b> pass through the second holes <b>311</b>, respectively. Through the help of the optical-fiber-connector positioning holes <b>3511</b> and the positioning holes <b>3521</b> of the positioning assemblies <b>35</b>, and of the first holes <b>310</b> and the bottom walls <b>3101</b> of the lower mold plate <b>31</b>, the four optical fiber connectors <b>2</b> can achieve a positioning effect, and then plastic material is poured into the two sprues <b>341</b>.

Thereafter, according to the present invention, as shown in <figref idref="DRAWINGS">FIG. 13C</figref>, four plastic-material channels <b>35</b><i>a </i>are formed in the positioning assembly <b>35</b>, such that plastic material can be fed into the lower side of the positioning assembly <b>35</b> through the four plastic-material channels <b>35</b><i>a</i>, and that a plastic member <b>36</b> can be formed at the upper side and lower side of the positioning assembly <b>35</b> (see <figref idref="DRAWINGS">FIG. 13B</figref>). Then the lower mold plate <b>31</b> is removed, so that an optical-fiber-connector assembled structure <b>3</b> can be formed. Further, the protective member <b>37</b> is arranged in the mounting portion <b>331</b> of the casing member <b>33</b>, such that emerged height H<b>9</b> of the protective member <b>37</b> is greater than emerged height H<b>10</b> of the bare fibers <b>201</b> of the optical fiber connectors <b>2</b>, so as to protect the ends of the four bare fibers <b>201</b>. According to the present invention, the casing member <b>33</b> and the protective member <b>37</b> are made, preferably, by metallic materials.

Further, references are made to <figref idref="DRAWINGS">FIG. 14A</figref>, a schematic view illustrating manufacturing of an optical fiber connector according to a nineteenth embodiment of the present invention; <figref idref="DRAWINGS">FIG. 14B</figref>, a schematic view illustrating a positioning assembly of the optical fiber connector; <figref idref="DRAWINGS">FIG. 14C</figref>, a schematic view illustrating layout of a casing member and the positioning assembly of the optical fiber connector; and <figref idref="DRAWINGS">FIG. 14D</figref>, a cross-sectional view illustrating the optical fiber connector. The manufacturing of the optical fiber connector, in the nineteenth embodiment, comprises an optical fiber assembly <b>40</b>, a lower mold plate <b>41</b>, a mold wall <b>42</b>, a casing member <b>43</b>, an upper board <b>44</b>, a positioning assembly <b>45</b>, and two tube-like members <b>46</b>.

According to the present invention, explanations are necessary for the differences on the structure of optical fiber assemblies. The optical fiber assembly <b>40</b> includes four bare fibers <b>401</b> and a protective layer <b>402</b>. Or alternatively, there may be formed with two optical fiber assemblies each constituted by two bare fibers and a protective layer. In other words, the molding, according to the present invention, can be adjusted to comply with the structure of the optical fiber assembly, without limitation to the number of the bare fibers and of the protective layers as described in the embodiments.

In the nineteenth embodiment for the manufacturing of the optical fiber connector, the optical fiber assembly <b>40</b> includes four bare fibers <b>401</b> and a protective layer <b>402</b>. The lower mold plate <b>41</b> includes four through holes <b>411</b>, a protrusion <b>412</b>, and two positioning pins <b>413</b>. The mold wall <b>42</b> is provided on the lower mold plate <b>41</b>. The casing member <b>43</b> is provided on the lower mold plate <b>41</b> and is adjacent to inner side of the mold wall <b>42</b>, such that both the mold wall <b>42</b> and the casing member <b>43</b> are provided on the protrusion <b>412</b>. The upper board <b>44</b> is arranged on the casing member <b>43</b>, and includes two sprues <b>441</b>, an optical-fiber-assembly hole <b>442</b>, and two mounting holes <b>443</b> corresponding to the two tube-like members <b>46</b>. The positioning assembly <b>45</b> is arranged in between the lower mold plate <b>41</b> and the upper board <b>44</b>, and on the lower mold plate <b>41</b>, and includes two positioning sheets <b>451</b><i>a</i>, <b>452</b><i>b </i>and a spacing board <b>452</b> which are overlapped with one another. The positioning sheet <b>451</b><i>a </i>is provided with four bare-fiber positioning holes <b>451</b><i>a</i><b>1</b> corresponding respectively to the four through holes <b>411</b> and the optical-fiber-assembly hole <b>442</b>, and with two first positioning holes <b>451</b><i>a</i><b>2</b> corresponding respectively to the two positioning pins <b>413</b>. The positioning sheet <b>451</b><i>b </i>is provided with four bare-fiber positioning holes <b>451</b><i>b</i><b>1</b> corresponding respectively to the four through holes <b>411</b> and the optical-fiber-assembly hole <b>442</b>, and with two first positioning holes <b>451</b><i>b</i><b>2</b> corresponding respectively to the two positioning pins <b>413</b>. The spacing board <b>452</b> is provided with four positioning holes <b>4521</b> corresponding respectively to the four bar-fiber positioning holes <b>451</b><i>b</i><b>1</b>, and with two second positioning pin holes <b>4522</b> corresponding respectively to the two positioning pins <b>413</b>. The two tube-like members <b>46</b> correspond to the two positioning pins <b>413</b>, respectively, and are arranged on the positioning assembly <b>45</b>. The tube-like members <b>46</b> are each provided with a third positioning pin hole <b>461</b> for receiving the positioning pins <b>413</b>.

Further, as shown in <figref idref="DRAWINGS">FIG. 14A</figref> and <figref idref="DRAWINGS">FIG. 14B</figref>, the bare-fiber positioning hole <b>451</b><i>a</i><b>1</b> is formed crater-like and opened downward, such that cross-section of the bare-fiber positioning hole <b>451</b><i>a</i><b>1</b> is relatively ladder-like, with a longer top side and a shorter bottom side, and that an opening is formed at the bottom thereof. With this configuration, the bare fibers <b>201</b> can be inserted into the bare-fiber positioning holes <b>451</b><i>a</i><b>1</b> easily during the process of manufacturing.

As shown in <figref idref="DRAWINGS">FIG. 14C</figref>, the positioning assembly <b>45</b> is formed as a dumbbell-like structure. The casing member <b>43</b> is formed with an accommodating space S<b>4</b> having a length L<b>1</b> and a width W<b>1</b>, which are greater than a length L<b>2</b> and a width W<b>2</b> of the positioning assembly <b>45</b>, so that a plastic member <b>47</b> formed through plastic material fed thereinto can reach to tips of the bare fibers <b>401</b>.

Further, the structure located at the protrusion <b>412</b> of the lower mold plate <b>41</b>, arranged in compliance with the mold wall <b>42</b> and the casing member <b>43</b>, makes the plastic member <b>47</b>, after feeding in plastic material and forming the plastic member <b>47</b> and removing the lower mold plate <b>41</b> and the mold wall <b>42</b>, exposed from the bottom of the casing member <b>43</b> (see <figref idref="DRAWINGS">FIG. 14D</figref>), so as to facilitate abrasion of the optical fiber connector <b>4</b>.

Still further, the positioning sheets <b>451</b><i>a</i>, <b>451</b><i>b </i>may be made of either plastic materials, metallic materials, or celluloid materials, with different thicknesses, such that the positioning sheet <b>451</b><i>a </i>has a larger thickness such as 0.5 mm, for increasing wear resistance and durability for the optical fiber connector <b>4</b>. Besides, the tube-like members <b>46</b> are made, preferably, of metallic material, such that, during use of the optical fiber connector <b>4</b> in operation of insertion and pulling out thereof, polluted particles or debris due to friction can be avoided, and that transmission of optical fiber signals will not be adversely affected.

Now references are made to <figref idref="DRAWINGS">FIG. 15</figref>, a schematic view illustrating manufacturing of an optical fiber connector according to a twentieth embodiment of the present invention; <figref idref="DRAWINGS">FIG. 16</figref>, a schematic view illustrating manufacturing of an optical fiber connector according to a twenty-first embodiment of the present invention; and <figref idref="DRAWINGS">FIG. 17</figref>, a schematic view illustrating manufacturing of an optical fiber connector according to a twenty-second embodiment of the present invention. The twentieth, twenty-first, and twenty-second embodiments relate to a modified application of the nineteenth embodiment shown in <figref idref="DRAWINGS">FIG. 14A</figref> to <figref idref="DRAWINGS">FIG. 14D</figref>.

According to the present invention, the manufacturing of the optical fiber connector of the nineteenth embodiment differs from that of the twentieth embodiment in that there are different numbers for the positioning sheets and for the second spacing boards. In the twentieth embodiment, the positioning member <b>45</b>A includes two overlappingly arranged positioning sheets <b>451</b><i>a</i>, <b>451</b><i>b </i>and spacing boards <b>452</b><i>a</i>, <b>452</b><i>b</i>. The positioning sheet <b>451</b><i>a </i>is provided with four bare-fiber positioning holes <b>451</b><i>a</i><b>1</b> corresponding respectively to four through holes <b>411</b> and optical-fiber-assembly holes <b>442</b>, and with two first positioning pin holes <b>451</b><i>a</i><b>2</b> corresponding respectively to two positioning pins <b>413</b>. The positioning sheet <b>451</b><i>b </i>is provided with four bare-fiber positioning holes <b>451</b><i>b</i><b>1</b> corresponding respectively to four through holes <b>411</b> and optical-fiber-assembly holes <b>442</b>, and with two first positioning pin holes <b>451</b><i>b</i><b>2</b> corresponding respectively to two positioning pins <b>413</b>. The spacing board <b>452</b><i>a </i>is provided with four positioning holes <b>452</b><i>a</i><b>1</b> corresponding respectively to four bare-fiber positioning holes <b>451</b><i>a</i><b>1</b>, and with two second positioning pin holes <b>452</b><i>a</i><b>2</b> corresponding respectively to two positioning pins <b>413</b>. The spacing board <b>452</b><i>b </i>is provided with four positioning holes <b>452</b><i>b</i><b>1</b> corresponding respectively to four bare-fiber positioning holes <b>451</b><i>b</i><b>1</b>, and with two second positioning pin holes <b>452</b><i>b</i><b>2</b> corresponding respectively to two positioning pins <b>413</b>. As such, the product of optical fiber connectors can be made.

Further, according to the present invention, the manufacturing of the optical fiber connector of the nineteenth embodiment differs from that of the twenty-first embodiment in that there are different numbers for the positioning sheets and for the second spacing boards. In the twenty-first embodiment, the positioning member <b>45</b>B includes three positioning sheets <b>451</b><i>a</i>, <b>451</b><i>b</i>, <b>451</b><i>c </i>and two spacing boards <b>452</b><i>a</i>, <b>452</b><i>b </i>which are interplaced with one another. The positioning sheet <b>451</b><i>a </i>is provided with four bare-fiber positioning holes <b>451</b><i>a</i><b>1</b> corresponding respectively to four through holes <b>411</b> and optical-fiber-assembly holes <b>442</b>, and with two first positioning pin holes <b>451</b><i>a</i><b>2</b> corresponding respectively to two positioning pins <b>413</b>. The positioning sheet <b>451</b><i>b </i>is provided with four bare-fiber positioning holes <b>451</b><i>b</i><b>1</b> corresponding respectively to four through holes <b>411</b> and optical-fiber-assembly holes <b>442</b>, and with two first positioning pin holes <b>451</b><i>b</i><b>2</b> corresponding respectively to two positioning pins <b>413</b>. The spacing board <b>451</b><i>c </i>is provided with four bare-fiber-assembly positioning holes <b>451</b><i>c</i><b>1</b> corresponding respectively to four through holes <b>411</b> and optical-fiber-assembly holes <b>442</b>, and with two first positioning pin holes <b>451</b><i>c</i><b>2</b> corresponding respectively to two positioning pins <b>413</b>. The spacing board <b>452</b><i>a </i>is provided with four positioning holes <b>452</b><i>a</i><b>1</b> corresponding respectively to four bare-fiber positioning holes <b>451</b><i>a</i><b>1</b>, and with two second positioning pin holes <b>452</b><i>a</i><b>2</b> corresponding respectively to two positioning pins <b>413</b>. The spacing board <b>452</b><i>b </i>is provided with four positioning holes <b>452</b><i>b</i><b>1</b> corresponding respectively to four bare-fiber positioning holes <b>451</b><i>b</i><b>1</b>, and with two second positioning pin holes <b>452</b><i>b</i><b>2</b> corresponding respectively to two positioning pins <b>413</b>. As such, the production of optical fiber connectors can be accomplished.

According to the present invention, in the nineteenth, twentieth, and twenty-first embodiments, position members <b>45</b>, <b>45</b>A, <b>45</b>B include different numbers of positioning sheets and spacing boards, variable combinations thereof depending on actual need for the positioning effect required, so as to make the product of optical fiber connectors.

Further, according to the present invention, the manufacturing of the optical fiber connector of the nineteenth embodiment differs from that of the twenty-second embodiment in that, in the twenty-second embodiment, a lower mold plate <b>41</b>A is provided with eight through holes <b>411</b><i>a</i>, a protrusion <b>412</b><i>a</i>, and four positioning pins <b>413</b><i>a</i>. A mold wall <b>42</b>A is provided on the protrusion <b>412</b><i>a</i>. Namely, in the twenty-second embodiment, production of two optical fiber connections can be accomplished in one process. This will increase the production capacity of optical fiber connectors. As such, according to the present invention, it is obvious to know that making plural optical fiber connectors at one process with corresponding molds is possible.

Further, references are made to <figref idref="DRAWINGS">FIG. 18A</figref>, a perspective exploded view illustrating a second embodiment in manufacturing an assembled structure of optical fiber connectors according to the present invention; <figref idref="DRAWINGS">FIG. 18B</figref>, an exploded cross-sectional view illustrating the second embodiment in manufacturing the assembled structure of optical fiber connectors; <figref idref="DRAWINGS">FIG. 18C</figref> is a perspective view illustrating the assembled structure of optical fiber connectors shown in <figref idref="DRAWINGS">FIG. 18A</figref>; and <figref idref="DRAWINGS">FIG. 18D</figref>, a schematic view illustrating a positioning assembly of the assembled structure of optical fiber connectors as shown in <figref idref="DRAWINGS">FIG. 18C</figref>. The manufacturing of the second embodiment of the assembled structure of optical fiber connectors comprises four optical fiber connectors <b>2</b>, a first body member <b>51</b>, a second body member <b>52</b>, a positioning assembly <b>53</b>, and a lower mold plate <b>54</b>.

The first body member <b>51</b> includes four first mounting portions <b>511</b>. The second body member <b>52</b> is arranged on the first body member <b>51</b>, and includes four second mounting portions <b>521</b> corresponding to the four first mounting portions <b>511</b>. The positioning assembly <b>53</b> includes a sheet <b>531</b> and a spacing board <b>532</b>. The sheet <b>531</b> is provided with four optical-fiber-connector positioning holes <b>5311</b> corresponding respectively to the four optical fiber connectors <b>2</b>. The spacing board <b>532</b> is provided with four positioning holes <b>5321</b> corresponding respectively to the four optical fiber connectors <b>2</b>. The lower mold plate <b>54</b> is provided with for through holes <b>541</b> corresponding respectively to the four positioning holes <b>5321</b>, and with an accommodating space S<b>5</b> for receiving the first body member <b>51</b>, the second body member <b>52</b>, and the positioning assembly <b>53</b>. Adhesive will be applied to the four optical fiber connectors <b>2</b>, the first body member <b>51</b>, the second body member <b>52</b>, and the positioning assembly <b>53</b>, so as to make the same integrated into one piece. The four optical fiber connectors <b>2</b> correspond to, and are arranged in, the four first mounting portions <b>511</b> and the four second mounting portions <b>521</b>; and besides, the four bare fibers <b>201</b> of the four optical fiber connectors <b>2</b> emerge from the optical-fiber-connector positioning holes <b>5311</b> of the sheet <b>531</b>.

As shown in <figref idref="DRAWINGS">FIG. 18A</figref>, it is noted that the four optical fiber connectors <b>2</b> are assembled in the first body member <b>51</b> and the second body member <b>52</b>, where the optical fiber connectors <b>2</b> are positioned in place through the help of the optical-fiber-connector positioning holes <b>5311</b> and the positioning holes <b>5321</b> of the positioning assembly <b>53</b>. Thereafter, after a pressing work with the lower mold plate <b>54</b>, an optical-fiber-connector assembled structure <b>5</b> can be obtained, where a protective member <b>55</b> is provided for accommodating the first body member <b>51</b>, the second body member <b>52</b>, and the positioning assembly <b>53</b> (see <figref idref="DRAWINGS">FIG. 18C</figref>), so as to reinforce the firmness of the optical fiber connectors. According to the present invention, the protective member <b>55</b> is preferably made of metallic materials.

Still further, references are made to <figref idref="DRAWINGS">FIG. 19A</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a twenty-third embodiment of the present invention; <figref idref="DRAWINGS">FIG. 19B</figref>, another exploded view illustrating manufacturing of the optical fiber connector; and <figref idref="DRAWINGS">FIG. 19C</figref>, an exploded view illustrating manufacturing of the optical fiber connector. The manufacturing of the optical fiber connector, in the twenty-third embodiment, comprises an optical fiber assembly <b>60</b>, a first body member <b>61</b>, a second body member <b>62</b>, a positioning assembly <b>63</b>, a lower mold plate <b>64</b>, and two tube-like members <b>65</b>.

In the twenty-third embodiment, the optical fiber assembly <b>60</b> includes four bare fibers <b>601</b> and a protective layer <b>602</b>. The first body member <b>61</b> includes a first mounting portion <b>611</b> and two receiving portions <b>612</b> for receiving the two tube-like members <b>65</b>. Further, the first body member <b>61</b> and the second body member <b>62</b> are formed with two recessed portions <b>6</b><i>a </i>(the recessed portions <b>6</b><i>a </i>are each constituted by a first recessed portion <b>61</b><i>a </i>and a second recessed portion <b>62</b><i>a</i>). The second body member <b>62</b> is arranged on the first body member <b>61</b>, and includes a second mounting portion <b>621</b>. The positioning assembly <b>63</b> includes a positioning sheet <b>631</b> and a spacing board <b>632</b> overlapped with each other. The positioning sheet <b>631</b> is provided with four bare-fiber positioning holes <b>6311</b> corresponding respectively to the first mounting portion <b>611</b> and the second mounting portion <b>621</b>, and with two first positioning pin holes <b>6312</b> corresponding respectively to two positioning pins <b>642</b>. The spacing board <b>632</b> is provided with four positioning holes <b>6321</b> corresponding respectively to the bare-fiber positioning holes <b>6311</b>, with two second positioning pin holes <b>6322</b> corresponding respectively to two positioning pins <b>642</b>, and with two protrusions <b>63</b><i>a </i>corresponding respectively to the two recessed portions <b>6</b><i>a</i>. The lower mold plate <b>64</b> is provided with four through holes <b>641</b> corresponding respectively to the bare-fiber positioning holes <b>6311</b>, with two positioning pins <b>642</b>, and with an accommodating space S<b>6</b> for receiving the first body member <b>61</b>, the second body member <b>62</b>, and the positioning assembly <b>63</b>. The two tube-like members <b>65</b> correspond respectively to the two positioning pins <b>642</b>, and are arranged on the positioning assembly <b>63</b>. Further, the tube-like members <b>65</b> are each provided with a third positioning pin hole <b>651</b> for receiving the positioning pin <b>642</b>.

The optical fiber assembly <b>60</b> is assembled in the first body member <b>61</b> and the second body member <b>62</b>, where the bare fibers <b>601</b> are positioned in place by the bare-fiber positioning holes <b>6311</b> of the positioning sheet <b>631</b> of the positioning assembly <b>63</b>, and where the two recessed portions <b>6</b><i>a </i>and the two protrusions <b>63</b><i>a </i>are provided for reinforcing the firmness thereof. Then adhesive will be applied to and in between the components of the optical fiber assembly <b>60</b>, the first body member <b>61</b>, the second body member <b>62</b>, the two tube-like members <b>65</b>, and the positioning assembly <b>63</b>; and then the optical fiber assembly <b>60</b>, the first body member <b>61</b>, the second body member <b>62</b>, the two tube-like members <b>65</b>, and the positioning assembly <b>63</b> each has their one end laid into the accommodating space S<b>6</b> of the lower mold plate <b>64</b> for pressing lamination; and that after the optical fiber assembly <b>60</b>, the first body member <b>61</b>, the second body member <b>62</b>, the two tube-like members <b>65</b>, and the positioning assembly <b>63</b> have been integrated into one piece, then the lower mold plate <b>64</b> can be removed, so as to form the product of optical fiber connectors. Besides, a protective member (not shown) can be provided for receiving therein the first body member <b>61</b>, the second body member <b>62</b>, and the positioning assembly <b>63</b> so as to reinforce the firmness of the optical fiber connectors.

Now references are made to <figref idref="DRAWINGS">FIG. 19D</figref>, a schematic view illustrating a positioning assembly of the optical fiber connector according to the twenty-third embodiment of the present invention; <figref idref="DRAWINGS">FIG. 19E</figref>, a schematic view illustrating another positioning assembly of the optical fiber connector; and <figref idref="DRAWINGS">FIG. 19F</figref>, a schematic view illustrating still another positioning assembly of the optical fiber connector. The positioning assembly <b>63</b> shown in <figref idref="DRAWINGS">FIG. 19D</figref> differs from the positioning assembly <b>63</b>A in <figref idref="DRAWINGS">FIG. 19E</figref>, and from the positioning assembly <b>63</b>B in <figref idref="DRAWINGS">FIG. 19F</figref>, in that the positioning assembly <b>63</b> is not provided with an opening.

According to the present invention, the positioning assembly <b>63</b>A includes a positioning sheet <b>633</b> and a spacing board <b>634</b>, where the positioning sheet <b>633</b> is formed with an opening <b>630</b><i>a </i>communicated therethrough, and with four positioning slots <b>630</b><i>a</i><b>1</b>; and where the positioning sheet <b>633</b> is provided with two first positioning pin holes <b>6332</b>. The spacing board <b>634</b> is provided with four positioning holes <b>6341</b>, a protrusion <b>63</b><i>a</i><b>1</b>, and two second positioning pin holes (not shown) corresponding to the two first positioning pin holes <b>6332</b>. The four positioning slots <b>630</b><i>a</i><b>1</b> are zigzag, and correspond respectively to four bare fibers <b>601</b>. In other words, the positioning sheet <b>631</b> positions the four bare fibers <b>601</b> with a manner of insertion; whereas the positioning sheet <b>633</b> with a manner of abutting against with each other for positioning the four bare fibers <b>601</b>.

Further, according to the present invention, the positioning assembly <b>63</b>B includes a positioning sheet <b>635</b> and a spacing board <b>636</b>, where the positioning sheet <b>635</b> is formed with an opening <b>630</b><i>b </i>communicated therethrough, and with four positioning slots <b>630</b><i>b</i><b>1</b>; and where the positioning sheet <b>635</b> is provided with two first positioning pin holes <b>6352</b>. The spacing board <b>636</b> is provided with four positioning holes <b>6361</b>, a protrusion <b>63</b><i>b</i><b>1</b>, and two second positioning pin holes (not shown) corresponding to the two first positioning pin holes <b>6352</b>. The four positioning slots <b>630</b><i>b</i><b>1</b> are semicircular, and correspond respectively to four bare fibers <b>601</b>. In other words, the positioning sheet <b>631</b> positions the four bare fibers <b>601</b> with a manner of insertion; whereas the positioning sheet <b>635</b> with a manner of abutting against with each other for positioning the four bare fibers <b>601</b>.

Still further, normally, a bore for positioning an optical fiber has a diameter of 0.127 mm. When a metal sheet has a thickness of 0.5 mm, a wire-cutting method, if applied to the positioning sheet <b>633</b> having the opening <b>630</b><i>a </i>or to the positioning sheet <b>635</b> having the opening <b>630</b><i>b</i>, will be more convenient than other working methods.

Further referring to <figref idref="DRAWINGS">FIG. 20</figref>, an exploded view illustrating manufacturing of an optical fiber connector according to a twenty-fourth embodiment of the present invention, the manufacturing of the optical fiber connector comprises an optical fiber assembly <b>60</b>, a first body member <b>61</b>, a second body member <b>62</b> (references may be made to <figref idref="DRAWINGS">FIG. 19A</figref> and <figref idref="DRAWINGS">FIG. 19B</figref> for the twenty-third embodiment), a positioning assembly <b>63</b>C, a lower mold plate <b>64</b>, and two tube-like members <b>65</b>.

According to the present invention, the twenty-fourth embodiment for manufacturing the optical fiber connector differs from the twenty-third embodiment for manufacturing the optical fiber connector in that the twenty-fourth embodiment comprises the positioning assembly <b>63</b>C having two positioning sheets <b>631</b><i>a</i>, <b>631</b><i>b </i>and having two spacing boards <b>632</b><i>a</i>, <b>632</b><i>b </i>interplaced with one another. The positioning sheet <b>631</b><i>a </i>is provided with four bare-fiber positioning holes <b>631</b><i>a</i><b>1</b> corresponding respectively to the first mounting portion <b>611</b> and the second mounting portion <b>621</b>, and with two first positioning pin holes <b>631</b><i>a</i><b>2</b> corresponding respectively to the two positioning pins <b>642</b>. The positioning sheet <b>631</b><i>b </i>is provided with four bare-fiber positioning holes <b>631</b><i>b</i><b>1</b> corresponding respectively to the first mounting portion <b>611</b> and the second mounting portion <b>621</b>, and with two first positioning pin holes <b>631</b><i>b</i><b>2</b> corresponding respectively to the two positioning pins <b>642</b>. The spacing board <b>632</b><i>a </i>is provided with four positioning holes <b>632</b><i>a</i><b>1</b> corresponding respectively to the bare-fiber positioning holes <b>631</b><i>a</i><b>1</b>, <b>631</b><i>b</i><b>1</b>, and with two second positioning pin holes <b>632</b><i>a</i><b>2</b> corresponding respectively to the two positioning pins <b>642</b>. The spacing board <b>632</b><i>b </i>is provided with four positioning holes <b>632</b><i>b</i><b>1</b> corresponding respectively to the bare-fiber positioning holes <b>631</b><i>a</i><b>1</b>, <b>631</b><i>b</i><b>1</b>, and with two second positioning pin holes <b>632</b><i>b</i><b>2</b> corresponding respectively to the two positioning pins <b>642</b>, and with two protrusions <b>63</b><i>c</i><b>1</b>. The lower mold plate <b>64</b> is provided with four through holes <b>641</b> corresponding respectively to the bare-fiber positioning holes <b>631</b><i>a</i><b>1</b>, <b>631</b><i>b</i><b>1</b>, and with two positioning pins <b>642</b>, and with an accommodating space S<b>7</b> for receiving the first body member <b>61</b>, the second body member <b>62</b>, and the positioning assembly <b>63</b>C, and after gluing and pressing, an optical fiber connector can be formed.

In the twenty-fourth embodiment, by way of the arrangement of the two positioning sheets <b>631</b><i>a</i>, <b>631</b><i>b</i>, an enhancing positioning effect for the bare fibers <b>601</b> can be obtained. Besides, the positioning sheets <b>631</b><i>a</i>, <b>631</b><i>b </i>are formed with different thicknesses, such that the positioning sheet <b>631</b><i>a</i>, having a larger thickness, can increase wear resistance and durability for the optical fiber connector.

Further, references are made to <figref idref="DRAWINGS">FIG. 21A</figref>, a perspective exploded view illustrating a third embodiment in manufacturing an assembled structure of optical fiber connectors according to the present invention; and <figref idref="DRAWINGS">FIG. 21B</figref>, a schematic view illustrating a positioning assembly of the third embodiment of the assembled structure of optical fiber connectors. The manufacturing of the third embodiment of the assembled structure of optical fiber connectors comprises four optical fiber connectors <b>2</b>, a first body member <b>61</b>, a second body member <b>62</b>, a positioning assembly <b>63</b>D, a lower mold plate <b>64</b>, and two tube-like members <b>65</b>.

In the third embodiment in manufacturing the assembled structure of optical fiber connectors, the optical fiber assembly <b>60</b> (references are made to <figref idref="DRAWINGS">FIG. 19A</figref> and <figref idref="DRAWINGS">FIG. 19C</figref>) is replaced with four optical fiber connectors <b>2</b>. To comply with such change in the structure, the first body member <b>61</b> is provided with four first mounting portions <b>611</b>, whereas the second body member <b>62</b> with four second mounting portions <b>621</b>. The positioning assembly <b>63</b>D includes a positioning sheet <b>637</b> and a spacing board (not shown). The positioning sheet <b>637</b> is provided with four optical-fiber-connector positioning holes <b>6371</b> and two first positioning pin holes <b>6372</b>. The spacing board includes a protrusion <b>63</b><i>d</i><b>1</b> and two second positioning pin holes (not shown) corresponding respectively to the two first positioning pin holes <b>6372</b>. The four optical fiber connectors <b>2</b> correspond to, and are arranged in the four first mounting portions <b>611</b> and the four second mounting portions <b>621</b>, and after gluing and pressing, a product of the assembled structure of optical fiber connectors can be formed.

Now referring to <figref idref="DRAWINGS">FIG. 22A</figref>, a perspective exploded view illustrating manufacturing of an optical fiber connector according to a twenty-fifth embodiment of the present invention, the manufacturing of the optical fiber connector comprises an optical fiber assembly <b>70</b>, a first body member <b>71</b>, a second body member <b>72</b>, a positioning assembly <b>73</b>, a lower mold plate <b>74</b>, and two tube-like members <b>75</b>.

In the twenty-fifth embodiment, the optical fiber assembly <b>70</b> includes four bare fibers <b>701</b> and a protective layer <b>702</b>. The first body member <b>71</b> includes a first mounting portion <b>711</b>, two receiving portions <b>712</b> for receiving the two tube-like members <b>75</b>, and two first fastening portions <b>713</b>. Further, the second body member <b>72</b> is arranged on the first body member <b>71</b>, and includes a second mounting portion <b>721</b>, two second fastening portions <b>722</b> corresponding respectively to the two first fastening portions <b>713</b>, and two first engaging portions <b>72</b><i>a</i>. The positioning assembly <b>73</b> includes two second engaging portions <b>73</b><i>a </i>corresponding respectively to the two first engaging portions <b>72</b><i>a</i>. The lower mold plate <b>74</b> is provided with four through holes <b>741</b> corresponding respectively to the four bare fiber <b>701</b>, two positioning pins <b>742</b>, and with an accommodating space S<b>8</b> for receiving the first body member <b>71</b>, the second body member <b>72</b>, and the positioning assembly <b>73</b>C. The two tube-like members <b>75</b> are each provided with a third positioning pin hole <b>751</b> for receiving the positioning pin <b>742</b>, and after gluing and pressing, an optical fiber connector can be formed.

According to the present invention, the manufacturing of the optical fiber connector of the twenty-fifth embodiment differs from that of the twenty-third embodiment in that in the twenty-fifth embodiment, the two first fastening portions <b>713</b> of the first body member <b>71</b> and the two second fastening portions <b>722</b> of the second body member <b>72</b> are engaged with each other, and in that the two first engaging portions <b>72</b><i>a </i>of the second body member <b>72</b> and the two second engaging portions <b>73</b><i>a </i>of the positioning assembly <b>73</b> are engaged with each other, so that the optical fiber connectors, being made, can be tightly combined with each other. Besides, a protective member (not shown) can be provided for receiving therein the first body member <b>71</b>, the second body member <b>72</b>, and the positioning assembly <b>73</b> so as to reinforce the firmness of the optical fiber connectors.

Further, references are made to <figref idref="DRAWINGS">FIG. 22B</figref>, a schematic view illustrating a positioning assembly of the optical fiber connector according to the twenty-fifth embodiment of the present invention; <figref idref="DRAWINGS">FIG. 22C</figref>, a schematic view illustrating another positioning assembly of the optical fiber connector; and <figref idref="DRAWINGS">FIG. 22D</figref>, a schematic view illustrating still another positioning assembly of the optical fiber connector. The positioning assembly <b>73</b> shown in <figref idref="DRAWINGS">FIG. 22B</figref> differs from the positioning assembly <b>73</b>A in <figref idref="DRAWINGS">FIG. 22C</figref>, and from the positioning assembly <b>73</b>B in <figref idref="DRAWINGS">FIG. 22D</figref>, in that the positioning assembly <b>73</b> is not provided with an opening.

According to the present invention, the positioning assembly <b>73</b> includes a positioning sheet <b>731</b> and a spacing board (not shown), where the positioning sheet <b>731</b> is provided with four bare-fiber position holes <b>7311</b> and two first positioning pin holes <b>7312</b>. The spacing board includes second engaging portions <b>73</b><i>a</i>, and is provided with two second positioning pin holes corresponding respectively to the two first positioning pin holes <b>7312</b>.

Further, according to the present invention, the positioning assembly <b>73</b>A includes a positioning sheet <b>733</b> and a spacing board <b>734</b>, where the positioning sheet <b>733</b> is formed with an opening <b>730</b><i>a </i>communicated therethrough, and with four positioning slots <b>730</b><i>a</i><b>1</b>; and where the positioning sheet <b>733</b> is provided with two first positioning pin holes <b>7332</b>. The spacing board <b>734</b> is provided with four positioning holes <b>7341</b>, two second engaging portions <b>73</b><i>a</i>, and two second positioning pin holes (not shown) corresponding respectively to the two first positioning pin holes <b>7332</b>. The four positioning slots <b>730</b><i>a</i><b>1</b> are zigzag, and correspond respectively to four bare fibers <b>701</b>. In other words, the positioning sheet <b>731</b> positions the four bare fibers <b>701</b> with a manner of insertion; whereas the positioning sheet <b>733</b> with a manner of abutting against with each other for positioning the four bare fibers <b>701</b>.

Still further, according to the present invention, the positioning assembly <b>73</b>B includes a positioning sheet <b>735</b> and a spacing board <b>736</b>, where the positioning sheet <b>735</b> is formed with an opening <b>730</b><i>b </i>communicated therethrough, and with four positioning slots <b>730</b><i>b</i><b>1</b>; and where the positioning sheet <b>735</b> is provided with two first positioning pin holes <b>7352</b>. The spacing board <b>736</b> is provided with four positioning holes <b>7361</b>, two second engaging protrusions <b>73</b><i>b</i><b>1</b>, and two second positioning pin holes (not shown) corresponding to the two first positioning pin holes <b>7352</b>. The four positioning slots <b>730</b><i>b</i><b>1</b> are semicircular, and correspond respectively to the four bare fibers <b>701</b>. In other words, the positioning sheet <b>731</b> positions the four bare fibers <b>701</b> with a manner of insertion; whereas the positioning sheet <b>735</b> with a manner of abutting against with each other for positioning the four bare fibers <b>701</b>.

Now references are made to <figref idref="DRAWINGS">FIG. 23A</figref>, a perspective exploded view illustrating a fourth embodiment in manufacturing an assembled structure of optical fiber connectors according to the present invention; and <figref idref="DRAWINGS">FIG. 23B</figref>, a schematic view illustrating a positioning assembly of the fourth embodiment of the assembled structure of optical fiber connectors. The manufacturing of the fourth embodiment of the assembled structure of optical fiber connectors comprises four optical fiber connectors <b>2</b>, a first body member <b>71</b>, a second body member <b>72</b>, a positioning assembly <b>73</b>C, a lower mold plate <b>74</b>, and two tube-like members <b>75</b>.

In the fourth embodiment in manufacturing the assembled structure of optical fiber connectors, the optical fiber assembly <b>70</b> (see <figref idref="DRAWINGS">FIG. 22A</figref>) is replaced with four optical fiber connectors <b>2</b>. To comply with such change in the structure, the first body member <b>71</b> is provided with four first mounting portions <b>711</b>, whereas the second body member <b>72</b> with four second mounting portions <b>721</b>. The positioning assembly <b>73</b>C includes a positioning sheet <b>737</b> and a spacing board (not shown). The positioning sheet <b>737</b> is provided with four optical-fiber-connector positioning holes <b>7371</b> and two first positioning pin holes <b>7372</b>. The spacing board includes a protrusion <b>73</b><i>c</i><b>1</b> and two second positioning pin holes (not shown) corresponding respectively to the two first positioning pin holes <b>7372</b>. The four optical fiber connectors <b>2</b> correspond to, and are arranged, in the four first mounting portions <b>711</b> and the four second mounting portions <b>721</b>, and after gluing and pressing, a product of the assembled structure of optical fiber connectors can be formed.

Further, the manufacturing of the optical fiber connectors, from the first embodiment (see <figref idref="DRAWINGS">FIG. 2</figref>) to the eighteenth embodiment (see <figref idref="DRAWINGS">FIG. 12F</figref>), and the twenty-third embodiment (see <figref idref="DRAWINGS">FIG. 19A</figref>), and the twenty-fifth embodiment (see <figref idref="DRAWINGS">FIG. 22A</figref>), the manner in the application of adhesive for the gluing can be can be divided into two methods as follows: First, to apply adhesive to the optical fiber assemblies <b>20</b>, <b>60</b>, <b>70</b>, and then to the other components, so as to form the optical fiber connectors; Second, to apply adhesive to the other components, and reserve space for arranging the optical fiber connectors <b>20</b>, <b>60</b>, <b>70</b>, and then put into the optical fiber connectors <b>20</b>, <b>60</b>, <b>70</b> so as to form the optical fiber connectors.

Still further, after completion of the optical fiber connectors according to the present invention, the process of abrasion will be performed. In general, a soft abrasive disc can be employed to polish the end of the protrusion of the optical fiber assembly. Thereafter, a hydrophobic material layer will be coated on the surface of the optical fiber assembly which has been polished by the soft abrasive disc. After the coating, a hard abrasive disc will be employed to grind the optical fiber assembly so as to remove the hydrophobic material layer on the end of the bare fiber, and to expose the end of the bare fiber. Finally, the process of spraying lens material will be applied to the ends of the bare fibers such that lenses can be formed on the bare fibers, and then the lenses are heated and become hard and solid. Such a working process has been a mature technique, and that related technical information can be searched from public sources and are well known to those skilled in the art. As such, no further descriptions thereof are necessary.

Given the above, it is noted that for the optical fiber connectors and assembled structure thereof, according to the present invention, the body members, the positioning members, and the casing members can reinforce the positioning effect of the bare fibers during the manufacturing of the optical fiber connectors and improve the strength of the optical fiber connectors. This will increase the reliability and production capacity for the automation of producing optical fiber connectors, so as to improve the utility of optical fiber connectors.

Although the present invention has been explained in relation to its preferred embodiments, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the invention as hereinafter claimed.